Question

Imagine if we tested genotype frequencies in our hypothetical population of 145 individuals where p=.59 and...

Imagine if we tested genotype frequencies in our hypothetical population of 145 individuals where p=.59 and q=.41, and found the following to be true of the population: 35 individuals had the AA genotype, 100 had the Aa genotype, and 10 had the aa genotype. What might we infer about the adaptive value of the heterogenous genotype?

A. It has no adaptive value.

B. It has been adaptive and subject to selective pressures.

C. It has been selected against.

D. Its frequency is likely due to genetic drift.

0 0
Add a comment Improve this question Transcribed image text
Answer #1

Given, p = 0.59 and q = 0.41.

Observed numbers in each class: :35 individuals had the AA genotype, 100 had the Aa genotype, and 10 had the aa genotype.

Let us calculate expected number of heterozygous individual, Aa, using the formula 2pq×N, where N is the population size.

=2×0.59×0.41×145

=70.15

Thus, we expect~70 Aa individuals, but there are 100 such individuals in the population. Thus, heterozygous has some adaptive value and it has been selected for, as its frequency is more than expected.

Genetic drift generally reduces heterozygosity in a population, and hence we would have observed a lower frequency of Aa individuals than expected, which isn't the case.

Most appropriate choice should be:

(B)It has been adaptive and subject to selective pressures.

Add a comment
Know the answer?
Add Answer to:
Imagine if we tested genotype frequencies in our hypothetical population of 145 individuals where p=.59 and...
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Not the answer you're looking for? Ask your own homework help question. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions
  • 13. The following genotype frequencies are observed in a population of 500 individuals. Number of individuals...

    13. The following genotype frequencies are observed in a population of 500 individuals. Number of individuals Genotype AA Аа 45 ad 210 245 Total = 500 Answer the following questions about this population (6 points total) 13d. Assume population size remains constant at 500, and that A is dominant to a. How many individuals would you expect to exhibit the dominant phenotype in the next generation if the population undergoes random mating and does not experience mutation, selection, migration, or...

  • We have a population of 250 individuals, with the following genotype frequencies: AA = 0.30; Aa...

    We have a population of 250 individuals, with the following genotype frequencies: AA = 0.30; Aa = 0.60; aa = 0.10. Calculate the frequency of the A and a allele in this population. Show your work.

  • need help with this .. From the pages 571-587 attached below. 1a) Suppose a population of...

    need help with this .. From the pages 571-587 attached below. 1a) Suppose a population of guppies was infected with a parasite. In that population a mutation results in a parasite resistant genotype that spreads through the population through natural selection. A subsequent mutation in the parasite results in a genotype that is unaffected by the newly evolved resistant guppy genotype. What is the name of the hypothesis that explains this host parasite “arms race”.? 1b) What is this name...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT