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2. For a given autosomal (autosomal means a non-sex cl (autosomal means a non-sex chromosome) gene with two alleles A and are
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Answer:

1).

AA x AA –Parents

A

A

AA

All progeny are with phenotype AA.

2).

AA x aa –Parents

a

A

Aa

All progeny with dominant phenotype = AA + Aa = A_ = ¾

3)

AA x Aa –Parents

A

a

A

AA

Aa

All progeny with dominant phenotype = AA + Aa = A_ = ¾

4)

Aa x Aa –Parents

A

a

A

AA

Aa

a

Aa             

aa

Dominant phenotype = AA + Aa = A_ = ¾

Recessive phenotype = aa = ¼

5).

Aa x aa –Parents

a

A

Aa

a

aa

Dominant phenotype = Aa = 1/2

Recessive phenotype = aa =1/2

6).

aa x aa –Parents

a

a

aa

Recessive phenotype = aa = 1

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