In seedcracker finches from cameroon, small- and large-billed birds specialize in cracking soft and hard seeds, respectively. if long-term climatic change resulted in all seeds becoming hard, what type of selection would then operate on the finch population?

Answers

Answer 1
The type of selection that will operate on the finch population is DIRECTIONAL SELECTION. Directional selection is a type of selection in which an extreme phenotype is favoured over other phenotype which make the allele frequency  to shift over time in the direction of the favoured phenotype. Directional selection is one of the three types of natural selection. 

Related Questions

Harmful effects of __________ include oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, and deterioration of the stomach lining.

Answers

Final answer:

The harmful effects of pain relievers, such as oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, and deterioration of the stomach lining, highlight the significant but sometimes overlooked adverse effects of NSAIDs and Acetaminophen.

Explanation:

The question addresses the harmful effects of pain relievers, which can range from oversensitivity to light, increased risk of heart attack and stroke, liver damage, thinning of the blood, to deterioration of the stomach lining. Nonsteroidal anti-inflammatory drugs (NSAIDs) are known to prevent blood clots and decrease inflammation but can cause gastrointestinal ulcers and bleeds, as well as kidney disease. Acetaminophen, an alternative with fewer side effects than aspirin, does not inhibit platelet aggregation but poses a severe risk of liver damage in cases of overdose.

Oversensitivity to light is a less discussed but significant adverse effect of some pain relievers.The increased risk of heart attack stroke and liver damage are alarming concerns associated with the prolonged or improper use of NSAIDs and Acetaminophen.Thinning of the blood and deterioration of the stomach lining highlight the systemic impact these medications can have beyond their targeted pain-relieving effects.

Individuals must use these medications as directed and be aware of their potential side effects to minimize health risks.

Which of the following correctly summarizes the development of the fetus during the second trimester?

Answers

During the second trimester, the fetus grows significantly, reaching about 12 inches in length, and begins to move, which the mother can feel. The placenta takes over nutrition, waste management, and hormone production from the corpus luteum, supporting the continued development of all fetal organs until birth.

During the second trimester of pregnancy, several significant developments occur in fetal growth and development. The fetus grows to about 30 cm (12 inches), and the expecting mother often feels the fetus's first movements. This period is marked by the continuous growth of all organs and structures.

Importantly, the placenta becomes the primary site for nutrition and waste management for the fetus, replacing the corpus luteum. The placenta also takes over the production of vital hormones such as estrogen and progesterone. These changes enable the fetus to progress towards further maturation necessary for eventual birth, and the placenta continues to function until delivery.

The correct option is D Specialization, function, and growth.  The second trimester focuses on the development and refinement of body functions.

The second trimester (months 4-6) is a period of rapid specialization for the fetus. Organs and systems that were formed in the first trimester begin to develop specific functions. Many body functions like swallowing, kicking, and hearing start to develop during this time. This signifies the beginning of function. The fetus also experiences significant growth in size and weight during the second trimester.

The other options are less suitable because

A Body functions, reflex development, and skin details: While these are all aspects of fetal development in the second trimester, they are specific examples rather than a comprehensive summary.

B Cell division and tissue specialization: This is a more general description that applies to earlier stages of development as well.

C Gastrulation, neurulation, and rhythmic breathing: These terms refer to processes that occur much earlier in embryonic development, during the first trimester.

The complete Question is

Which of the following correctly summarizes the development of the fetus during the second trimester?

A Body functions, reflex development, and skin details

B Cell division and tissue specialization

C Gastrulation, neurulation, and rhythmic breathing

D Specialization, function, and growth

​Approximately what percentage of the body's energy needs at rest is supplied by fat

Answers

Final answer:

Around 60% to 70% of the body's energy at rest comes from fat. Our metabolism is designed to extract energy from a mix of macronutrients and at rest, the body shifts towards using more energy from fat.

Explanation:

Approximately 60% to 70% of the body's energy needs at rest are supplied by fat. Our bodies are designed to extract energy from a mix of macronutrients including fats, proteins, and carbohydrates. When we are at rest, the metabolism shifts towards using a higher proportion of energy from fat. This shift occurs because fat, although it takes more oxygen to metabolize than carbohydrates, provides a more dense supply of energy. However, the exact percentage can vary based on several factors like diet, physical activity level, and genetics.

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The most important and most effective way to control pests in a food establishment is to _______.

Answers

The most important and most effective way to control pests in a food establishment is to implement Integrated Pest Management (IPM). This is an ongoing cycle of inspecting, identifying, analyzing, and treating pests in the establishment.

FURTHER EXPLANATION

There are several steps in implementing the IPM.

1. The first step is to look at the entire establishment and identify areas where pests come through.

2. Once the areas where pests may enter and exit the establishment are identified, an action plan to ensure that pests are unable to pass through are put in place such as covering holes or entry points. Keeping the areas clean and sanitized and observing proper waste disposal are also key practices to help prevent infestation.

3. The kind of pests should also be identified and monitored to be able make an appropriate treatment plan based on their behavior. The correct selection of pest control treatment is necessary to ensure that the treatment is specific to the kind of pests that are found on the site. Also, an analysis of why these pests are found on site must be conducted so that further preventive measures may be put in place.

4. When planning and implementing pest control measures start with non-chemical methods first like baiting and trapping pests. Only when these methods fail should chemical control methods be used and only with doses specifically needed for the identified and targeted pests.

5. Proper documentation of the pest control cycle must be prepared for a smooth implementation of the continuous integrated pest management.

LEARN MOREfood safety https://brainly.com/question/4254210good hygiene practices https://brainly.com/question/8657784sanitation https://brainly.com/question/3848062

Keywords: sanitation, pest control

The most effective and most important way to control pests in a food establishment is to implement an integrated pest management program.

Further Explanation:

Humans, pests, and rodents prefer to live in a warm environment in cold or wintery days. That’s why pests find their way inside the building and home if they smell any food. Pests like cockroaches, flies, and rodents may cause harmful disease and people get sick frequently. To prevent food from getting contaminated by pests, the manufactures should apply for an integrated pest management program. It mainly consists of different precautionary phrases that are used to prevent pests out of the facilities and to eradicate the pest that is present in the food. A food safety regulator checks and ensures that the food is fit to be consumed. The pathogens that are present in the food can affect the person. This can result in the transmission of the pathogen.

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Answer Details:

Grade: High School

Subject: Biology

Chapter: Microorganism

Keywords:

Human, food, transmission, environment, cockroach, flies, building, home, facilities, consume, pathogen, disease, sick, rodents.

What is the role of RNA

Answers

I honestly don't remember much about this and I'm sure someone else will answer more thoroughly for you but I believe it is the "messenger". It carries instructions from DNA to conrol the synthesis of proteins
There are 3 roles of RNA in protein synthesis
1) Messenger RNA or abbreviated as mRNA 
 - Carries genetic material copied from DNA in the form of series of 3 base coded "words"
- Each word represents an amino acid which will be  built into a protein later
2)Transfer RNA of tRNA
 - The key to deciphering the mRNA
 - The correct tRNA will adhere to the mRNA in a ribosome with an amino acid in tow which will connect to form a polypeptide chain.
3) Ribosomal RNA or rRNA
 -The rRNA kind of facilitates protein synthesis 
 - It is what forms the protein from a polypeptide chain.
 - Also joins the ribosome together ( Ribosomes are made of 2 subunits)
The process is kind of a visual process. For me, I had to kind see it to actually understand. It is a confusing process to understand from just words.

Crash Course Biology on Youtube should have an episode on Protein Synthesis or on RNA and the nucleic acids
There are also various animations online that show the process.

hope this helps


When egg whites are whipped they stiffen into a meringue. the change that occurs in the protein is called?

Answers

It is called Denaturation. Denaturation is a procedure in which proteins or nucleic acids lose the quaternary structure, tertiary structure and auxiliary structure which is available in their local state, by use of some outer anxiety or compound, for example, a solid corrosive or base, a concentrated inorganic salt, a natural dissolvable, radiation or warmth.

Why should the lateral sides of the infant's heel be used for capillary puncture?

Answers

Damage to nerve or bone can happen when you puncture infant's extremities to collect capillary blood. The safest region to do this is the lateral side of the infant's heel. With this method, the chance damage to the nerve of bone is much less than the middle of an infant or the finger.

What causes sweating during running in order to maintain homeostasis? Jenny is running for more than an hour on a pleasant sunny morning. Her body is sweating to maintain homeostasis, which is caused by the action of a/an (blank)

Answers

Increased body temperature did this on plato

Answer:

The correct answer would be "increased body temperature".

The homeostasis refers to the ability of the body to maintain a stable internal environment irrespective of the change in the external environment.

For example, running causes an increase in body temperature as heat or energy, carbon dioxide, and water are produced by cellular respiration. This increase in body temperature activates the sweating of the body.

The sweating with the help of evaporation reduces the elevated body temperature to the normal range.

Thus, homeostasis of body temperature is maintained.

How might a substrate of the citric acid cycle block respiration when it is present in great excess

Answers

The substrate of the citric acid cycle which can block respiration when it is present in excess is MALONATE. Malonate inhibits respiration by competing with succinate dehydrogenase for its acitve site. Malonate binds to the active site without reacting, thus competing with succinate. This disrupts the cellular respiration in the cell.

The Organisms In a pond and the physical factors influencing them best describes ?

Answers

The organisms in a pond and the physical factors influencing them best describes an ecosystem.

Why is evolution considered a theory and not a hypothesis?

Answers

a hypothesis is an educated guess where a theory is a confirmed hypothesis. It is no longer a guess it is now a fact. We have hard evidence and studies that state evolution is real.
Evolution began as a hypothesis when it was first researched by Charles Darwin in 1831. He wanted to show that organisms adapted over time due to a variety of factors.

It is considered a theory because it is a general idea, supported by years of research, data, statistics, etc. that explains a general concept; as well as lay out a general rule that can explain most questions pertaining to the subject.

Hope this helps, and I'm the brainiest! :)

Imagine that a probe sent to mars brings back a sample that contains a very primitive life-form, which appears similar to bacteria. scientists are able to revive it and begin to grow it in culture. much to their amazement, they discover that the organism has dna and that the dna encodes proteins. however, the dna of these martian microbes contains only two nucleotides. if the martian microbe uses triplet codons, what is the maximum number of different amino acids that it can have in its proteins

Answers

The formula for the maximum number of different amino acids can be calculated using the equation:

Maximum number of different amino acids = [(Number of nucleotides) ^ (Number of codons)] - 1

Where it is given that:

Number of nucleotides = 2

Number of codons = triplet = 3

The -1 in the equation implies that at least one of the codons must be a stop.

 

Therefore substituting to the equation:

Maximum number of different amino acids = (2 ^ 3) – 1

Maximum number of different amino acids = 8 – 1

Maximum number of different amino acids = 7                        (ANSWER)

What is the correct definition for individual team sports?

Answers

A team sport has beyond one player on a side or team. Examples are baseball, football, soccer, hockey and basketball are all team sports. An individual sport has only one opponent playing against each other. Wrestling is one example of an individual sport. Golf is an example of individual sport that can have many rivals in the same game and it can have a group of golfers form a team but each player is an individual player. Tennis is also an individual sport when played as "singles" and a team sport when played as "doubles" but can also have teams put together with singles and doubles.Sports in which only one player per team participates at a time, with individual scores counting toward the team score.

Individual team sports involve teams of members with complementary skills working towards shared goals, where they act collaboratively and share rewards

The correct definition for individual team sports is centered around activities where teams are composed of individual members who are committed to a common purpose and goals and utilize their complementary skills to work cohesively towards a collective objective. Unlike in regular groups, where members may be focused on their own areas, a team acts collaboratively, sharing both the tasks and the rewards. Members are dedicated to the mutual vision and are often ready to sacrifice their individual interests for the good of the team. Examples of individual team sports include soccer and basketball, wherein each player contributes actively by cooperating with fellow teammates, such as by passing the ball to allow another to score, thus achieving success or facing defeat together.

Teams are also characterized as being smaller, task-oriented groups, where members are deeply loyal and strive hard in a unified direction. Success in team sports involves clear and inspiring goals, a results-driven structure, competent members, a collaborative climate, high-performance standards, as well as external support, recognition, and accountable leadership.

Which part of a flower will develop into fruit?

Answers

The part of a flower that develops into a fruit is called an ovary.

The ovary is the part of the flower that develops into a fruit.

Inhalation and exhalation move air into and out of the lungs. what happens when you inhale and exhale? drag the labels to the correct locations on the flowchart to identify the steps of inhalation and exhalation.

Answers

When you inhale or breathe in air, your diaphragm will contract or tighten and it will move downward. This will result to an increase in space in your chest cavity where your lungs will expand. The intercostal muscles located between your ribs will also help in the enlargement of the chest cavity. When your lungs expand, air will flow through your nose or mouth. The air will travel through your wind pipe and into your lungs. It will pass through your bronchial tubes and it will eventually reach and enters the alveoli or the air sacs. 

When you exhale or breathe out on the other hand, your diaphragm will relax and it will move upward into your chest cavity. The intercostal muscles will likewise relax resulting to the reduction of space in the chest cavity. When the space in the chest cavity gets smaller, air that is carrying carbon dioxide will be forced out of your lungs and windpipe and it will eventually go out of your nose or mouth.

What lung values changed (from those of the normal patient) in the spirogram when the patient with emphysema was selected?

Answers

When the patient with emphysema was selected lung values changed (from those of the normal patient) in the spirogram are:

ERV, IRV, RV, FVC, FEV1, FEV1 %

The reason behind the changes of these values are due to the loss or inability of electric recoil. A spirogram (graph like structure obtained by the respiratory movements) is measured by spirometer.

The lung values that changed include the following: ERV < IRV < RV < FVC < FEV1%. Spirogram is used to measure pulmonary function test. It is a test that tests the efficiency of the lungs to exchange carbon dioxide and oxygen gases. The vital capacity of the lung is equal to TV +IRV + ERV and the total capacity is equal to the summation of TV, IRV, ERV and RV.

Why don't we experience a solar eclipse every month?

Answers

This is due to the earths spin on it's axis and the moons gravitational pull. We don't and cant get a lunar eclipse  or a solar eclipse  every month, since the alignment of the sun, moon and Earth is not exact enough.

Molly, whose eyes are brown, inherited a gene for blue eyes from her mother and a gene for brown eyes from her father. mollys brown eyes are part of her ____.

Answers

Her brown eyes are inherited from her dads genes.

What is not a characteristic of a multiparty system?

Answers

The characteristic which is not in the multi-party system is dictatorship.

A multi-party system is a system of government related to politics in which there are more than two parties have a chance to rule and get real political power. There is an option for parties either they want to rule on their own or they become a part of federation government.

Red blood cells that are bathed in blood neither shrink nor swell and burst. If the concentration of blood os 0.5 M, what could be the concentration of cytoplasm of RBCs?

Answers

If the concentration of blood is 0.5 M, and red blood cells that are bathed in blood neither shrink nor swell and burst, the concentration of cytoplasm of RBCs is 0.5m. An isotonic solution relates to two solutions that have the same water concentration on both sides of a membrane. So, cells in isotonic solution have the same water concentration as the isotonic solution and thus they will neither shrink nor swell and burst. If the concentration of blood is 0.5 M, the concentration of RBC cytoplasm must be the same which is 0.5 M.

Mice eat corn. Hawks eat mice. Which term describes hawks in this food chain?

Answers

Answer:

The hawk is a secondary consumer.

Explanation:

The primary producers or the producers are the plants, which can synthesize their own food with the help of sunlight. The consumers are the organism, which depend on other organism for their food requirement they cannot synthesize their own food. The primary consumers are the organism who feed on plant products. The secondary consumers are the organisms who feed on primary consumers. the tertiary consumers are the organism who feed on secondary consumers.

In this case, the mice is primary consumer and the hawk is secondary consumer, as the mice feed on plant product and hawk feed on mice.

What technique could be used to make the organelle indicated by letter x more visible?

Answers

The technique that can be used is called STAINING. Staining is a method that is generally used when observing cell organelles under the microscope. Observing some cell organelles under the microscope can be very difficult at times, the visibility of such organelles can be increased by staining them with appropriate stains depending on the organelle. Examples of stains that can be used are methylene blue and iodine.

What do you call the red pigment found in vertebrates that functions in oxygen transport?

Answers

There are actually two red pigments found in certain vertebrates that function in oxygen transport (or storage). Hemoglobin is present in the blood of most vertebrates and binds oxygen molecules, in order to transport them to body tissues in need of oxygen for energy (ATP) production.
Myoglobin, mainly in mammals, is a protein (enzyme) found in red (skeletal) muscle cells, that aids in binding oxygen when it's plentiful being delivered via blood. The purpose is that in high stress, low oxygen situations such as strenuous exercise, the myoglobin releases its bound oxygen to provide it to the starving overworked muscle cells.
**Fun fact: it's the hemoglobin that gives the bright red color of blood when it's bound to oxygen, and the myoglobin of mammal flesh gives it the typical pinkish-red hue that is seen in mammalian meat (veal, steak, ham, venison, bison, etc.). Other non-mammalian animals (fish, birds, frogs, snake, alligator, etc.) tend to have lighter-colored skeletal muscle meat due to the lack of myoglobin, amongst other factors.

How is sunlight the primary source of energy for you?

Answers

Since sunlight makes plants go through photosynthesis and that makes the plants food so they can grow and we eat it and get energy, although we also use the sun for solar energy.

Genes that are linked together _____.

Answers

Genetic Linkage. Linked genes sit close together on a chromosome, making them likely to be inherited together (left). Genes on separate chromosomes are never linked (center). But not all genes on a chromosome are linked.
chromosome is the answer your looking for

Which answer correctly compares the Krebs cycle and the electron transport chain?

Answers

Is there choices? If not I would say that the Krebs cycle is needed in order for the electron transport chain to occur.

Answer:

choices

Explanation:

A: Both are aerobic and focus on breaking down organic molecules.

B:  Both occur in the mitochondria and result in producing more ATP.

C:  Both are anaerobic and occur inside the mitochondria.

D; Both occur in the cytoplasm and result in producing more ATP.

answer: D

Lymphatic ________ are formed from the union of the largest collecting lymphatic vessels.

Answers

The answer is : Trunks

Which characteristics are used to differentiate between the six kingdoms?

Answers

Answer;

-The body type, cell type, cell structure, nutrition

Explanation;

-There are six commonly accepted kingdoms. Each kingdom includes a set of organisms that share similar characteristics. The six Kingdoms are: Archaebacteria, Eubacteria, Fungi, Protista, Plants and Animals.

-Organisms are placed into these categories based on similarities or common characteristics. Some of the characteristics that are used to determine placement are cell type, nutrient acquisition, and reproduction.

-The two main cell types are prokaryotic and eukaryotic cells. Common types of nutrient acquisition include photosynthesis, absorption, and ingestion. Types of reproduction include asexual reproduction and sexual reproduction.

The characteristics are used to differentiate between the six kingdoms

1. similarities or differences in morphological features (outer forms)

2. anatomy (body structure)

3. physiology (body chemical reaction)

4. behavior

5. produce offspring / mate each other

6. gene mapping

Further explanation

Grouping living things is known as classification

The study of grouping living things is called Taxonomy

The classification of living things aims to

1. knowing the benefits for the benefit of humans2. knowing his family relationship3. knowing the dependence between living things4. makes it easy to learn living things

In ancient times the classification of living things was classified into only 2, namely plants (kingdom Plantae) and animals (kingdom Animalia)

In subsequent developments the classification of living things is divided into 6 kingdoms, namely:

1. Animalia (animal), are multicellular \2. Plantae (plants) are multicellular3. Fungi (fungi) have eukaryotic cells4. Protists, single-celled5. Kingdom Monera is no longer used and instead the kingdom of Archaebacteria and Eubacteria appears.

Monera is a single-celled living creature

The classification of living things themselves is based on

1. similarities or differences in morphological features (outer forms)

2. anatomy (body structure)

3. physiology (body chemical reaction)

4. behavior

5. produce offspring / mate each other

6. gene mapping

Learn more

Compare and contrast the domains of Bacteria and Archaea

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one reason scientists have developed a system to classify organisms

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taxonomy.

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Keywords: taxonomy, The classification of living things

A friend tells you he's having flashbacks and vivid nightmares of past events. In addition, he's feeling emotionally numb. You might be concerned that he needs to be checked for possible

A. PTSD.
B. DSM.
C. GAD.
D. OCD.

Answers

A. Post-Traumatic Stress Disorder 

The correct answer is option A, that is, PTSD.  

PTSD or post-traumatic stress disorder is the condition that illustrates an extreme and on-going emotional reaction, which occurs due to coming in contact with trauma or extreme stress. Clinically, such incidents comprise threatened or actual death, a threat to physical or psychological integrity, or any kind of serious physical injury.  

PTSD is considered to be mainly an anxiety disorder and should not be confused with usual adjustment and grief post-traumatic events. The symptoms of PTSD comprises flashbacks, nightmares, insomnia, emotional detachment, irritability, loss of appetite, anxiety, and clinical depression.  


Type of allele with the ability to hide or mask the expression of a recessive allele.

Answers

it it dominant allele, as when the dominant allele is present, its traits are shown
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