Punnett square: Father and mother are heterozygous and each are carriers for a d

Question

Punnett square: Father and mother are heterozygous and each are carriers for a dominant linked disorder. What is the % chance the child will be born with the disorder Punnett square: Father and mother are heterozygous and each are carriers for a dominant linked disorder. What is the % chance the child will be born with the disorder Punnett square: Father and mother are heterozygous and each are carriers for a dominant linked disorder. What is the % chance the child will be born with the disorder

Explanation / Answer

parents

A

a

A

AA

Aa

a

Aa

aa

Since parents are heterozygotic carriers their phenotype is Aa Aa

The gamets are A a

Progeny         25%AA        50%Aa       25%aa      ie    1:2:1

25% chance for having the disease(AA)

parents

A

a

A

AA

Aa

a

Aa

aa

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