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The diploid number of chromosomes in guppies, Poecilia reticulate , is 46. Two g

ID: 56587 • Letter: T

Question

The diploid number of chromosomes in guppies, Poecilia reticulate, is 46. Two guppies that are heterozygous for genetic markers on every chromosome ( e.g. genotype Aa Bb Cc Dd…..Tt Uu Vv Ww, where all genes segregate independently) are crossed.

Part A

With respect to these markers, how many genetically distinct types of gametes are produced as a result of independent assortment during meiosis?

Enter your answer as a single integer with an exponent.

Part B

How many possible genotypes of offspring are produced by the cross described?

Enter your answer as a single integer with an exponent.

Explanation / Answer

Part A)

Genetically distinct types of gametes are produced as a result of independent assortment during meiosis would be 223 . Since each genotype contain 2 alleles during independent assortment these 46 alleles segregate as individual gametes.

Part B)

The possible genotypes of offspring are produced by the cross described = 246 . This is because, the diploid chromosome number is 46 with each gene carrying 2 alleles.