Hardy Weinberg Quiz

Practice Hardy-Weinberg calculations and allele frequencies. Quiz your genetics knowledge!

You will need a calculator and a piece of scrap paper. Do your best. Please do it on your own so we can see what you know and don't know. 1. You have sampled a population of moths in which 64% of them demonstrate the dominant phenotype. Use this information to answer the following questions: A. The frequency of the dominant allele (p) is... .64 .8 0.4 0.6 B. The frequency of the recessive allele is... .64 .36 0.4 0.6 C. The frequency of the homozygous dominant genotype is... 0.41 0.16 0.36 0.48 D. The frequency of the heterozygous genotype is... 0.41 0.16 0.36 0.48 E. The frequency of the homozygous recessive allele is ... 0.41 0.16 0.36 0.48 F. If there are 200 moths in this population how many would have the heterozygous genotype? 96 32 72 128 2. In a population of 200 mice there are 12 white mice (recessive) and the remaining mice are brown (dominant). Use this info to answer the following questions. A. The frequency of p is... 0.58 0.24 0.76 .36 B. The frequency of the q allele is... 0.58 0.24 0.76 0.36 C. The frequency of the homozygous dominant genotype... 0.58 0.36 0.06 0.76 D. The frequency of individuals expressing the heterozygous genotype is... 0.58 0.36 0.06 0.76 E. How many dominant alleles will there be in this population of 200 mice? 232 304 188 72 F. How many of the 200 moths would be heterozygous? 116 72 12 188 3. A class of 30 kids (15 males and females) I had in the past went of a class trip to a remote island off the coast of Florida. The class is never found as the island turned out to be in the Bermuda Triangle. This new population of students has 4 students who are carriers (hetero) for the recessive cystic fibrosis allele. Assuming the frequency of that allele doesn't change in the population as it grows, what will be the.... A. ...frequency of the recessive allele? 0.26 0.74 0.07 0.93 B. ...percentage of he population affected by cystic fibrosis? 49% 0.49% 7% 21% If the population of the island reached 1621 people after 5 generations, how many people with cystic fibrosis would you expect? 794 12 397 8