Group1 Relative fitness among genotypes A1A: 0.7 A1A2: 1) (0.5pts) Is A2 dominan
ID: 206785 • Letter: G
Question
Group1 Relative fitness among genotypes A1A: 0.7 A1A2: 1) (0.5pts) Is A2 dominant or recessive? Receive 2) (Mets) IffA2) = q = 0.1 , what is A2A2: 1.0 038 q in the next generation (ie, q)? q Group Relative fitness among genotypes A1A1: 0.7 A1A2: 1.0 A2A2: 1.0 1) (0.5pts) Is A2 dominant or recessive? Dominant 2) (0,50) If/(A2) = q = 0.1, what is q in the next generation (ie, q)? q' 321 3) (0.5pts) What explains the difference in delta-q between the two groups? Does the difference fit your intuition? Why or why not? 4) (Ipt) Graph the long term expectation for fixation of the A2 allele under the two scenarios (A2 dominant vs. A2 recessive)Explanation / Answer
ANSWER 1.
Fitnesses of genotypes have been given as:
A1A1 = 0.7
A1A2 = 0.7
A2A2 = 1
According to the given data A2A2 is most fit; its survival rate is the highest.
Note that A2 is recessive. Look at the fitness of the heterozygote. It is same as that of that of the homozygote (A1A1); this means that A1 is dominant.
ANSWER 2.
If f(A2) = q = 0.1; then, p = (1 - 0.1) = 0.9
Genotype frequency of A2A2 in the next generation = (initial genotype frequency * fitness) = (0.1 * 0.1 * 1) = 0.01
Genotype frequency of A2A1 in the next generation = 2 (0.9) (0.1) * 0.7 = 0.126
Also note that Genotype frequency of A1A1 in the next generation = (0.9) (0.9) * 0.7
Allele frequency of A2 in the next generation = [0.01 + 1/2 (0.126)] = 0.073
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.