You are studying three populations of mountain unicorns (Unicornus montanus). It

Question

You are studying three populations of mountain unicorns (Unicornus montanus). It has been shown that heterozygosity at the A locus has been linked with increased resistance to cornitis (a potentially deadly swelling of the horn present in some U. montanus populations). You are able to sample all individuals within these populations resulting in the following genotype counts and you have found that all allele frequencies are constant p = 0.5), regardless of the population. Which scenario is most likely, given these observed genotype counts (calculations are not necessary). [1pt] A1A A1A2 A2A2 Pop 1 40 20 40 10 80 10 Pop 3 25 5025 al The relative frequency of heterozygotes in Popl is likely due to overdominance The high frequency of homozygotes in Pop 2 is likely due to assortative mating The higher frequency of the A2 allele in Pop 3 is likely due to disease resistance Pop 2 has likely been affected by comitis for many generations The A2A2 genotype displays a higher fitness in Pop 3 when compared to Pop 1

Explanation / Answer

Answer:
Option D is correct.

Explanation:
It is given that heterozygotes are advantageous under a selective condition.
So, the heterozygous population will be maximum in a population only when the selection pressure operates continuously.

In population 2, the number of heterozygotes is high as it is the better genotype (Resistant to infection) under the selection pressure (Infection).

Related Questions

Navigate

• Browse (All)
• Browse Y
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.