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Alecsey [184]
2 years ago
10

An example of a trait that is determined by multiple alleles is.

Biology
1 answer:
pickupchik [31]2 years ago
6 0

Answer:

Traits controlled by a single gene with more than two alleles are called multiple allele traits. An example is ABO blood type. Your blood type refers to which of certain proteins called antigens are found on your red blood cells.

Explanation:

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Which of the following is a confirmatory test used to reveal the presence of blood with high accuracy?
MissTica

Answer:

The answer is Kastle-Meyer test..

8 0
3 years ago
In a population, surrounded with dark gray rocks, there lived 2 types of beetles, a gray beetle and a white beetle. In the start
Svetlanka [38]

Directional selection favors one of the extreme phenotypes over the other one. <u>Option C is correct</u>. Natural selection is the evolutive force, and 0.40, 0.40, and 0.20 are the new genotypic frequencies.

<h3>What is directional selection?</h3>

Directional selection is one type of natural selection. Let us remember that natural selection is an evolutive force.

Directional selection increases the proportion of individuals with an extreme phenotypic trait.

There must be a selective pressure or environmental pressure acting on populations to lead the species to increase the number of individuals expressing that extreme phenotype.

This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.

In the exposed example,

  • two original phenotypes ⇒ gray and white
  • substrate color ⇒  dark gray rocks
  • environmental pressure ⇒ birds preying on beetles

- Grey beetles managed to camouflage with rocks since their gray color was similar.

- White beetles were exposed on the dark gray rocks, so they were easily seen by birds.

- Predation by birds was an environmental pressure that had a stronger influence on the white phenotype.

Natural selection favored gray-colored beetles, who could survive and reproduce.

Assuming a diallelic gene expressing complete dominance codes for beetles color, we can suggest that the frequency of one of the homozygous genotypes increased, while the other decreased to near cero. Heterozygous individuals kept the allele coding for the white phenotype.

Among the options, <u>C is the correct one</u>. Natural selection is the evolutive force, and 0.40, 0.40, and 0.20 are the new genotypic frequencies.

You can learn more about natural selection and  directional selection at

brainly.com/question/9830102

brainly.com/question/12226774

#SPJ1

7 0
2 years ago
Please help I was in a student president meeting and they pulled me out of science and math I don’t have a well understanding of
lions [1.4K]
Sexual reproduction creates more genaric diversity because it needs two creatures.
While asectual only needs one person.
if it only requires one person then the offspring recieves that persons genes.
in sexual reproduction it requires two people wich means tge offspring receves half of each persons genes and since no one has the ecact same genes then it creates more genetic diversity.
8 0
3 years ago
If blood pressure is increased at the arterial baroreceptors, what would happen with the activity level of the parasympathetic n
lukranit [14]
<h2>PNS and SNS</h2>

Explanation:

Parasympathetic nervous  system (PNS)  

  • In the event that the blood pressure is increased because of any explanation, it is detected by the baroreceptor system
  • The baroreceptor reflex invigorates is the part of the parasympathetic nervous system
  • The PSNS causes reflation of veins, decreasing total peripheral resistance. It also decrease the heart rate

Sympathetic nervous system  (SNS)  

  • Heart rate and blood volume are regulated  by the interrelated activities of the sympathetic nervous system (SNS) and the renin-angiotensin-aldosterone system (RAAS)
  • The SNS is improperly dynamic in obesity and <em>hypertension</em> and plays a causal or permissive role in all types of chronic hypertension

3 0
3 years ago
What is a gene? O the different forms of a trait a segment of DNA that is the basic unit of heredity O the appearance or charact
Marysya12 [62]

Answer:

a gene is the different forms of a trait a segment of DNA that is the basic unit of heredity

Explanation:

3 0
2 years ago
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