Hardy Weinberg Problems

Hardy Weinberg Problems

Question 1

5 out of 300 starfish are born with green stripes. These green stripes show that the starfish can morph into other marine animal. Starfish are given this characteristic by a recessive allele.

* A) What is the frequency of the genotype of individuals in the population born with green stripes? * B) What is the frequency of the dominant allele? * C) What is the frequency of the recessive allele? * D) What is the frequency of the carriers in the population?

Question 2

9 out of 1800 leprechauns are born with brown hair, whereas the remaining 1791 leprechauns are born with normal ginger hair. These leprechauns with brown hair are given this characteristic by a recessive allele.
* B) What is the frequency of the dominant allele? * C) What is the frequency of the recessive allele? * D) What is the frequency of the carriers in the population?

Question 3

A population of 100 ducks by a lake contains 37 ducks with pink and blue spots. The remaining ducks are yellow. The pink and blue spotted ducks are the product of a recessive allele.

* Calculate the percentage of heterozygous individuals in the population.

Question 4

3 million years ago amongst 400 bumble bees, there was a variation. There were 79 bumble bees that were striped red and blue. This was caused by a recessive allele.

* What is the frequency of the genotype of the bumble bees in the population born with red and blue stripes? (q²)

Question 5

In the future, it is predicted that 31 out of 50 horses will have pink eyes. This will be caused by a mutated recessive allele.

* What is the frequency of the recessive allele?

Answer Sheet

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