For goldfish, solid orange coloring is dominant while orange with black spots is
ID: 183211 • Letter: F
Question
For goldfish, solid orange coloring is dominant while orange with black spots is recessive. A total of 2500 goldfish were stocked in an outdoor pond, 2275 solid orange and 225 orange with black spots. Since the fish came from a protected, indoor, stable environment, you may assume the stocked population was in equilibrium. What are the allele and genotype frequencies in the original stocked population? (please show all work on the handout to receive credit) Allele Frequencies Dominant allele, p = Recessive allele, q = Genotype Frequencies Dominant genotype, p Heterozygous genotype, 2pq Recessive genotype, q2 QUESTION 18 Ten years later the pond was drained and 2000 fish were recovered: 1280 solid orange and 720 orange with black spots. You can assume that the population has settled into a new equilibrium. What are the allele and genotype frequencies in the recovered population? Click Allele Frequencies artominant allele. p to sove and suGenotype Frequencies CDominant genotype, p Sohietérozygous genotype, 2pq ArRecéssive genotype, o2 to sove allExplanation / Answer
Answer.
17).
Recessive genotype frequency = q^2= 225/2500=0 .09
Recessive allele frequency=q= Sqrt of q^2=0.3
As p+q= 1
Dominant allele frequency=p=1-0.3= 0.7
p^2= 0.7*0.7=0.49
2pq= 2*0.7*0.3= 0.42
18).
Recessive genotype frequency q^2= 720/2000= 0.36
Recessive allele frequency=q= 0.6
p+q=1
Dominant allele frequency=p= 0.4
p^2= 0.16
2pq= 2*0.4*0.6= 0.48
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