recessive condition that causes students to go into convulsions whenever Matheph
ID: 254458 • Letter: R
Question
recessive condition that causes students to go into convulsions whenever Mathephobia is a dreaded (but hypothetical) they see formulas in biology class. D is the normal allele, d is the mathephobia allele .DD and Dd individuals are normal dd individuals are Mathephobic In a class of 100 biology students, 32 had convulsions during their first population genetics lecture. Assume students are a representative sample of a population at Hardy-Weinberg equilibrium that a. b. What is the frequency of the mathephobia (d) allele in this population? How many students in this class are homozygous dominant (DD) and heterozygous (Dd) for this condition? The trauma induced by a second genetics lecture caused 75% of the students with the mathephobia to spontaneously combust and disappear c. d. What is the frequency of each allele in the surviving population of genetics students? What are the frequencies of each genotype and phenotype?Explanation / Answer
Answer:
q^2=dd=32/100=0.32%
d=q=0.56
(a)Frequency of mathephobia (d) allele is 0.56 or 56%
p+q=1
p=1-q=1-0.56=0.44
p^2=DD=0.193=19%
About 19 students are homozygous dominant (DD)
2pq=Dd=2 x 0.44 x 0.56 =0.49= 49%
About 19 students are heterozygous (Dd)
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