Question

Fictional scenario: Individuals with green hair have the presence of the dominant gene "Z" and people with purple hair are homozygous for the recessive allele “z”. There were 200 students in a classroom who were surveyed for their hair color and 155 people had green hair whereas 45 people had purple hair. Use the information to answer the next set of questions. Show your work for credit. 1) What are the variables for a recessive allele? A dominant allele? Homozygous dominant genotype? Heterozygous? Homozygous recessive genotype? Think about how many alleles make up a genotype. 2) What is the Hardy-Weinberg equation? Label the parts. 3) What are the potential genotypes for a person with green hair? A person with purple hair? 4) Calculate the frequency of q(r). Is this an allele frequency or genotype frequency? 5) Calculate the frequency of p(R). Is this an allele frequency or genotype frequency? 6) Estimate the genotype frequencies of ZZ and Ziz,

Answer 1

And I) variables for recessive allele z express only in ... homozygous condition zz? → Dominant allele → Z which express itself in o homozygous and heterozygous form. took ZZ : Zz . Two alteles make up a genotype. le ZZ, Zz, 22 Multiple alleles are found in population in Not in indovi duci ). Ano 2) Handy-Weinberg equah'on → Allele frequency, P+ 9 =) Genotype frequency, P24 2P9+4* = 1 where, P= represents dominant gene fallele q = represents recessive gene allele p² = homozygous dominant genotype Pq = heterozygous genotype q² = homozygous recessive genolype. Ans} breen hair genotype p², 2pq [zz & Zz] 1 Purple hair genotype qz [ zz] Aush) q (Allele frequency) q² = 45.00 q = V2Z q = 0.46 Anos) P(Allele frequency) Ptq=1 P+0.46 = 1 P=1-0.46 5.54 Amb) Genotype frequency 22 (23) Coisy)?=29 Genotype freq (22) * px q =) 0:54*0.46 3.24