Tongue rolling ability is conferred by the presence of a dominant R allele. Nonr

Question

Tongue rolling ability is conferred by the presence of a dominant R allele. Nonrollers are genotype rr. A class of GN 311 students consists of 232 rollers and 41 nonrollers. Assume that this population is at Hardy-Weinberg equilibrium for this locus.

Please round all answers correctly to 4 decimal digits.

Question 10 Tongue rolling ability is conferred by the presence of a dominant R allele. Nonrollers are genotype rr. A class of GN 311 students consists of 232 rollers and 41 nonrollers. Assume that this population is at Hardy-Weinberg equilibrium for this locus. Please round all answers correctly to 4 decimal digits. Not yet Points out of What is the frequency of the R allele? 0.75 Answer Flag question Question 11 What is the frequency of the r allele? Not yet Answer Points out of 0.75 Flag question Question 12 How many people in the class are expected to be heterozygous for this locus? Not yet Answer Points out of 0.75 Flag question

Explanation / Answer

Total 311 students consists of 232 rollers and 41 nonrollers.

q2= 41/232 = 0.1767

q= 0.4201

acc. to hardy- weinberg law= p+q=1; p= 1-0.4201=0.5799

question 12. no. of people expected to be heterozygous. = 2pq

= 2* 0.5799* 0.4201

= 0.4872

0.4872/2 =0.2436

question 11. frequeency of r allele =0.1767 +0.4872/2 =0.4203

question 10. frequency of R allele = p2+ 1/2 2pq= 0.5799

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