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Korvikt [17]
2 years ago
9

What are four factors believed to cause microevolution? How do these four factors relate to macroevolution?

Biology
1 answer:
Vilka [71]2 years ago
7 0

Answer:

Four factors believed to cause microevolution are natural selection, mutation, gene drift and gene flow (migration). Many occurrences of these four factors result in macroevolution. 3. The allele frequency of genes in a population that has undergone microevolution slightly change.Explanation:

hope this helps

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Hello(: I need some help what is an <br><br> (Allele)
Licemer1 [7]

Answer:

An allele is one of two, or more, forms of a given gene variant. For example, the ABO blood grouping is controlled by the ABO gene, which has six common alleles. Nearly every living human's phenotype for the ABO gene is some combination of just these six alleles.

Explanation:

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4 0
3 years ago
Which of the following is NOT one of the three major types of stimuli to trigger endocrine glands to manufacture and release the
almond37 [142]

Answer:

option C. permissive stimuli

Explanation:

The three major kinds of stimulus that triggers the endocrine glands to synthesize and release hormones are humoral stimuli, hormonal stimuli and neural stimuli. The humoral stimulus regulates the release of hormones with the changes in the concentration of extracellular fluids. For example, the increase of glucose concentration in blood causes pancreas to release hormone insulin.

The hormonal stimuli allows secretion of hormone only with the secretion of any other hormone. The hypothalamus gland secretions allows the anterior pituitary gland to secrete hormones. The release of thyroid hormone is an example of hormonal stimuli.

The neural stimuli allows the production of hormones directly from the glands. The production of epinephrine and norepinephrine hormones are the example of neural stimuli. Thus, option C is correct.

6 0
2 years ago
Nutrition is a broad field that involves the foods you consume, the nutrient content of those foods, and how those foods and the
Marrrta [24]

Answer:

A

Explanation:

The correct option that does not describe the science of nutrition would be <u>that many studies have been conducted on the association between certain types of cancer and diet and, therefore, these links are well-understood</u>.

<em>While truly indeed many studies have been conducted linking certain types of cancer and diet, scientists are far from understanding the link between diets and cancer. While some degrees of understanding exists, it is not 100% certain that there is a cause-effect relationship between these two factors, and a large percentage of cases of cancer are caused by factors that cannot be controlled.</em>

The correct option is, therefore, A.

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2 years ago
___________ immunity occurs when a mother breastfeeds her baby.
creativ13 [48]

active immunity is the immunity which get in hospital

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"a(n) ________ drug is effective against a wide variety of pathogens."
Romashka-Z-Leto [24]
A Broad-spectrum drug.
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