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3 years ago

Within a population of fish, ____________ exists in the form of body color. Some fish are orange and some fish are red.

2 answers:

6 0

In populations of all living things, there is a variation of different traits. This is important for the process of evolution and natural selection because if the individuals in the population vary in size, shape, color or any other morphological or physiological trait, the individuals can be more or less successful because of them and therefore natural selection can filter the variations that are the fittest for that environment.

AlekseyPX3 years ago

3 0

According to the question, within a population of fish, genetic variation exists in the form of body color.

In the population of all living things, there is a variation of different traits---these traits are as a result of the 'genetic variation' or the different make-ups of genes in the living organism.

<h2>Further Explanation</h2>

The genes are the inherited segments of the DNA. These Genes exist in alternate versions, or alleles which determine distinct traits that can then be passed on from parents to offspring.

Within a population of fish, genetic variation exists in the form of body color. While some fish are orange, some fish are red. This is because the population of fish lives on an orange reef bed.

Fish that are orange tend to blend in and resist predation. Due to such ability, they are likely to survive to reproduce. In this manner, natural selection is driving evolution.

Genetic variation or how genes constitute to offspring is an essential process of evolution and natural selection for all living organism, including the fishes.

Fish produce many offspring which inherit the genes for body color. After several generations, one can expect the fish population to have a larger portion of orange species compared to the red species.

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KEYWORDS:

genetic variation
genes
predation
population of fish
DNA

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When the vasomotor center of our brain wishes to increase blood pressure, it increases ____________ signals causing ______.

dlinn [17]

When the vasomotor center of our brain wishes to increase blood pressure, it increases the heart rate signals causing The greater contraction of the heart causes more blood vessels to constrict, increasing the blood vessels' resistance.

By speeding the heartbeat, making the heart beat harder, and constricting some blood vessels, the sympathetic nervous system increases blood pressure. This will enhance the vessels' resistance.

What controls blood pressure by the vasomotor center?

The vasomotor center modifies the tone of the vascular smooth muscle. Both the local and systemic blood pressure are impacted by this. The vasomotor center produces increased sympathetic tone when blood pressure lowers. This causes an increase in blood pressure.

How is blood pressure regulated?

The autonomic nervous system has short-term control over blood pressure (ANS). Baroreceptors are capable of detecting changes in blood pressure. These are situated in the carotid sinus and aortic arch. High arterial pressure causes the blood vessel wall to stretch, activating the baroreceptors.

What systems regulate peripheral resistance in the vasomotor center?

The vasomotor center in the tunica media regulates smooth muscle contraction or vessel tone. Circulating output is impacted by changes in peripheral resistance, pressure, and flow. The majority of these neurons are in charge of causing sympathetic neurons to release the neurotransmitter norepinephrine.

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1 year ago

Which environment is most likely to be characterized by dry scrub with frequent fires?

Katyanochek1 [597]

Environments likely to be characterized by the presence of dry scrubs and frequent wildfires are those that lack the presence of rain and suffer high sunlight hours.

When referring to the terrestrial biomes that meet the characteristics described, we can include:

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The temperate grassland/cold desert biomes have:

cold and dry winters
hot, dry summers
Extended sunlight hours

This biome is very dry, and the harsh weather makes it difficult for plants to grow, leading to their dry scrub characteristic. This biome also experiences frequent wildfires due to the intense sunlight and lack of rain to which it is exposed.

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Elan Coil [88]

Answer:

Your question was a bit vague... but Crenarchaeota, Euryarchaeota, Korarchaeota, Thaumarchaeota and Nanoarchaeota are the four types of Archaea.

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in animal muscular movement is caused due to change in position of proteins how do you think movement will be brought about in t

Colt1911 [192]

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When there is an external disturbance , parts of the plant releases certain chemicals including potassium ions that causes water to diffuse out of cells. This releases the turgor pressure and causes the leaves to shrink. 

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