Question 1-(3 Marks) A population consists of the following genotype proportions
ID: 274156 • Letter: Q
Question
Question 1-(3 Marks) A population consists of the following genotype proportions: 30% AA individuals 20% Aa individuals 50 % aa individuals What is the value of p (frequency of the dominant allele) in this population? Question 2-(7 Marks) Assume the population given in above is a large population, with random mating, no selection, no mutation and no migration. What would be the expected proportion of homozygous dominant (AA) individuals in the population after 3 generations of these conditions? Show your workExplanation / Answer
1. The answer is
P = Dominant allele here i.e. A and q = recessive allele here i.e. a.
So, allele frequency:
Genotype
Freequency In %
Allele A
Allele a
Total
AA
30
60
0
60
Aa
20
20
20
40
aa
50
0
100
100
Total
100
80
120
200
Frquency of allele = Number of a allele/Total number of alleles
Allele A
= 80/200
0.40
Allele a
= 120/200
0.60
So, the frequency of dominant allele p = i.e. A = 0.40.
ACCORDING TO CHEGG GUIDELINES WE HAVE TO ANSWER ONE QUESTION AT A TIME. POST THE REST AS SPERATE QUESTIONS, THEN I CAN HELP YOU.
Genotype
Freequency In %
Allele A
Allele a
Total
AA
30
60
0
60
Aa
20
20
20
40
aa
50
0
100
100
Total
100
80
120
200
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