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

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. genotypeAa 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:  As a result of independent assortment 24 gametes each are produced for genotypes AaBbCcDd and Tt Uu Vv Ww .

The gametes would be ABCD, abcd, Abcd, aBCD, aBcd, abCd, AbCD, abcD, ABcD, ABCd, ABcd, abCD, AbCd, AbcD, aBCd, aBcD for parent AaBbCcDd and TUVW, tuvw, Tuvw, tUVW, tUvw, tuVw, TuVW, tuvW, TUvW, TUVw, TUvw, tuVW, TuVw, TuvW, tUVw, tUvW.

Number of gametes from parent = 2n where n= haploid number of chromosomes

Part B: Genotype of offspring produced for the cross between AaBbCcDd and TtUuVvWw is 28

Related Questions

Navigate

• Browse (All)
• Browse T
• Subjects