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strojnjashka [21]
3 years ago
8

Which would most likely lead to a change in the genetic structure of a population?

Biology
2 answers:
dmitriy555 [2]3 years ago
8 0

Answer;

A 5 percent increase in the reproductive success of some genotypes, but a 5 percent decrease in the reproductive success of other genotypes.

Explanation.

Genotypes with increaed reproductive success will have larger gene pool than other with 5% reduction.Thefore higher frequency of survival.Besides the high reproductive success ensure genetic variation which leads to changes in genome .

Full Question.

Which of the following would most likely lead to a change in the genetic structure of a population?

a. An increase of 1.1-fold in the reproductive success of all genotypes

b. A decrease of 20 percent in the reproductive success of all genotypes

c. A 5 percent increase in the reproductive success of some genotypes, but a 5 percent decrease in the reproductive success of other genotypes

d. Both a and b will likely change the genetic structure of the population more than c will.

e. None of the above is likely to change the genetic structure

Rina8888 [55]3 years ago
3 0

Answer:

The answer is C.

A 5 percent increase in the reproductive success of some genotypes, but a 5 percent decrease in the reproductive success of other genotypes

Explanation:

Incomplete question, here is the full question: https://quizlet.com/153540854/biology-107-part1-flash-cards/

For the genetic structure of a population to change, we can either depend on natural selection or mutations but there has to be an imbalance.

The answers given in the options A and B are referring to changes in genotypes which surely affects the genetic structure of the population but the way these options are given is in equilibrium, meaning they create and imbalance but then counter that with something else.

In option C, some genotypes get a 5 percent increase while some get a 5 percent decrease in their reproductive success, which will most likely result in a change in the genetic structure of a population.

I hope this answer helps.

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<h3><u>Beginning of the term</u></h3>

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<u>The initial number of students with each genotype was:</u>

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Because there are 2 × N number of alleles in the population and the A allele appears twice in the homozygous individuals and once in the heterozyogus.

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The frequency of the a allele is 0.33

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Observed AA = 210

Expected Aa = 2pq × N = 2 × 0.67 × 0.33 × 630 = 279

Observed Aa= 420

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