An individual has genotype AaBb, where the loci for A-a and B-b are 40 cM apart in coupling phase. What percent of the gametes are expected to be AB?

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Collen VonLv2

28 Sep 2019

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1a) If crossing over occurs 30% the time between genes A and B, what percentage of the gametes of an individual with genotype AB/ab would be expected to be type ab?

1b) Two autosomal genes (A and B) are located 16 m.u. apart. A male (produced by gamete Ab fertilizing gamete aB) has children with a female that is homozygous recessive (aabb). What is the probability of producing a son with genotype AaBb?

An individual with genotype AaBb produces the following gametes. What does this suggest about the chromosome location/distance and allele arrangement of A-a and B-b? AB (20%) Ab (30%) aB (30%) ab (20%

amethystsnake340

You use a genetic analysis to genotype 250,000 eggs from a rare tropical fish. In the analysis you notice that two loci seem to be in linkage disequilibrium. Therefore, you choose a female that is a double heterozygote for the two loci and genotype an extra 200 eggs from that fish. You observe the following gamete frequencies:

AB = 0.12

Ab = 0.38

aB = 0.35

ab = 0.15

What are the frequencies of the A and the B allele in this population of gametes? What is the coefficient of disequilibrium for these loci?

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An individual has genotype AaBb, where the loci for A-a and B-b are 40 cM apart in coupling phase. What percent of the gametes are expected to be AB?

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