1. two genes loci, A and B, assort independently and alleles A and B are dominat

Question

1. two genes loci, A and B, assort independently and alleles A and B are dominate over alleles a and b. what type of gametes will an AaBb individual produce and in what proportions

2. in dogs, dark coat (D) is dominant over albino (d) and short hair (S) is dominant over long hair (s). after crossing dogs with dark and short hair with albino dogs with long hair, in f2 a breeder got 89 dogs with dark and short hair, 31 dark, long hair, 29 albino, short hair and 11 albino, long hair. write a genotype formula for each class?

Explanation / Answer

1.) AaBb : gametes will be : AB,Ab,aB,ab and their proportion will be 1:1:1:1

2.) Cross takes place between :Ddss x ddSs

genotype of 89 dogs with dark and short hair : Ddss

genotype of 31 dogs with dark and long hairs: DdSs

genotype of 29 albino and short hair dogs ; ddss

genotype of 11 albino and long hair dogs: ddSs

male/female dS ds Ds DdSs ( dark and long hairs) Ddss (dark and short hairs ) ds ddSs(albino and long hairs ) ddss(albino and short hairs)

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