WILL UPVOTE!
Factor the expression.
x^2 - 49 =

They are both heterozygous for the trait.

They both express the dominant trait, but one of the offspring is recessive. The only option for this is that both are heterozygous and have two genes: recessive and dominant.

You can see this when you draw a Punnett square.

Subject 3 will be Dd where D is the dominant trait, and d is the recessive trait. Subject 4 will be Dd.

Now cross them, and you'll found 25% chances of having a recessive offspring.

You can't have only one of them heterozygous because, when you draw the Punnett square, you'll have 50% dominant and 50% dominant heterozygous.

The same happened with only one homozygous.

And, if they were both homozygous dominant you only have one trail, no two, and again you can't have a recessive offspring.

Muscle cells can contract, a function unique to them, with skeletal muscles enabling bone movement and cardiac muscles pumping blood. Striations in skeletal and cardiac muscles arise from the alignment of sarcomeres, giving them a banded appearance. Smooth muscles, in contrast, are not striated and are located in the GI tract, among other organs.

Differences Between Types of Muscle Tissue

Muscle cells are specialized to contract and produce movement, a function not found in other cells. Muscle cells, specifically skeletal muscles, are responsible for moving bones, while cardiac muscles contract to pump blood within the heart. Unlike cardiac and skeletal muscle, smooth muscle cells, which are found in the gastrointestinal tract among other locations, are not striated due to their arrangement in sheets rather than bundles.

Striated muscles, such as skeletal and cardiac muscles, are characterized by their banded appearance, which is due to the sarcomere structure within the muscle fibers. While both types of striated muscles contain sarcomeres, which are the functional units of muscle contractions, their arrangement is slightly different in each, contributing to their unique appearances and functions.

The function of the skeletal muscle is to permit voluntary movement, as exemplified by the action of the biceps muscle when lifting an object. In contrast, cardiac muscle function is involuntary and specifically adapted to pump blood through the heart chambers and throughout the body.

the answer is b cutting down large areas of forest

The following not included in a typical age structure diagram is  C.  The populations historical growth

A typical age structure diagram provides information about the distribution of a population across different age groups, which helps in understanding population dynamics and predicting population growth. The diagram includes the population sex ratio, which shows the proportion of males to females in each age group.

It also includes the relative numbers of people in different age groups, which is represented by the shape of the diagram (pyramidal, conical, etc.). Additionally, the age structure diagram provides information about the proportions of reproductive age individuals, as this is crucial for understanding fertility rates and population growth potential.

However, the population's historical growth is not included in a typical age structure diagram. Age structure diagrams do not provide information about the past growth rates or precise historical population size. They focus on the current distribution of the population across different age groups and provide insights into the potential future growth based on the age composition of the population. The correct answer is  C.  The populations historical growth

After Ca2+ is released from the sarcoplasmic reticulum, it binds with Troponin C, alters its shape and removes the tropomyosin from the binding site. Then, the myosin head binds to the exposed active sites of actin to form cross-bridges.

The ANSWER is:

Assuming ur doing SOS:

In organisms that most often reproduce asexually, the product of sexual reproduction is often more resistant to unfavorable environmental conditions than the individual of the species produced by mitosis. Some kinds of protists such as protozoans and algae do not usually reproduce sexually unless growing conditions have become unfavorable. Many plants do not produce seeds until the approach of winter or a dry period of the year.

Sexual reproduction is defined as the fusion of male and female gametes to give rise to the organism. Sexual reproduction leads to diversity and variation. However, some asexually reproducing organisms undergo sexual reproduction.

The organisms reproducing asexually switch to sexual reproduction as:

1. Algae and fungi reproduce asexually, a mode of reproduction in which the organisms are genetically similar to the parent.

2. The algae and fungi switch to a sexual mode of reproduction because of the adverse conditions of the environment.

3. Sexual reproduction leads to diversity and variation that help the offspring to be better suited and sustained to the environment, having higher chances of survival.

Thus, during adverse conditions, the organisms like fungi shift to the sexual mode for the better survival of their offspring.

To know more about sexual reproductions, refer to the following link:

https://brainly.com/question/7464705

Newly formed skin cells, like all human somatic cells, would have 46 chromosomes.

The chromosomes are in each newly formed skin cell after an injury, such as a cut on the arm. In humans, somatic cells, which include skin cells, are generally diploid, meaning they contain a full set of chromosomes - one set from each parent, totalling 46 chromosomes. When your skin begins to heal after a cut and new skin cells are formed, these cells undergo a process called mitosis, which is how somatic cells divide to generate new cells identical to the original one. Therefore, each newly formed skin cell would also have 46 chromosomes.

Answer:

Option (A).

Explanation:

Mitosis can be defined as a type of cell division that produces two identical daughter cells from a single parent cell. Mitosis is responsible for growth and repairing of old or damaged cells.

When bone breaks, mitosis occurs in pre-existing bone cells, which leads to formation of new bone cells to heal broken bone.

Thus, the correct answer is option (A).

Answer:

A. insect and pest populations decreased

Explanation:

The key outcome of meiosis II is the production of four unique haploid cells, which are important for genetic diversity in sexual reproduction.

The important outcome of meiosis II is the separation of sister chromatids into individual chromosomes, resulting in the formation of four genetically unique haploid cells. During meiosis II, two haploid cells produced from meiosis I undergo cell division without chromosome replication in interkinesis. The division in meiosis II follows steps similar to mitosis but it's critical in ensuring genetic diversity through the creation of unique gametes for sexual reproduction.

The answer is A. Abiotic factors are the non-living parts of a species’ habitat. Examplses of abiotic factors are water, moiuntains, wind, rain, temperatuatres, and etcetera. Abiotic factors are significant in an ecosystem because they affect the biotic factors in that they affect their growth and development of organisms in the ecosystem and also their reproduction.

Answer: a / decrease in plant population…….

Explanation: edge 2024

In the case when all the glucose energy should be released so the energy should be losted. The explanation regarding the gradual process should be explained below.

In the case when all the glucose energy should be released so the energy should be lost in terms of light and heat. Since this harms or destroyed the cell. Moreover, the process of cellular respiration should permit the cell for controlling the energy realization into the ATP package form that should be used in an efficient manner with respect to the cell activities.

Learn  more about cell here: https://brainly.com/question/6948678

nuts ans grains are SEEDS. vegetables fruits flowers seeds

D.Seeds!

Answer:

It is B.

Explanation:

I just took the test

No machine can operate at 100 percent efficiency because some of the energy input will always be used to overcome the force of gravity and the effects of friction and air resistance. Even an optimally tuned engine heats up eventually, and that heat is thermal energy being lost. So C. will be your Best answer.

The right option is; climate change

Mount Tambora in Indonesia erupted and caused the "Year without a Summer." Over 100,000 people died from starvation because of the resulting climate change.

Mount Tambora is situated on the island of Sumbawa in Indonesia. The destructive eruption of Mount Tambora occurred in 1815, and there was release of large amounts of ash, aerosols, pumice and other rocks into the atmosphere. This event influenced the climate and causes intense weather and harvest failures in many parts around the world. Over 100,000 people perished from famine and diseases, because crops could not grow in those regions.

Glycogen and fats are used by animals to store energy, while plants use starches like amylose and amylopectin. Glycogen is found primarily in liver and muscle cells, and fats deliver a dense energy supply. Starch provides an accessible energy source for the less dynamic energy requirements of plants.

Glycogen is the energy storage compound found in animals, and starch is the energy storage compound of plants. Animals use glycogen and fats, including oils and triglycerides, as their primary sources of stored energy. Glycogen is a highly branched polymer of glucose and is especially prevalent in liver and muscle cells for quick energy release. Fats, including oils and triglycerides, offer animals a dense energy source due to the high energy content of fatty acids (R-COOH) present in the fat molecules.

On the other hand, plants use starch molecules, such as amylose and amylopectin, for energy storage. Starches are less complex than animal polysaccharides and are suitable for the less dynamic energy needs of plants. When plants need to use this stored energy, they hydrolyze the starch back into glucose units to fuel their metabolic processes.