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If two individuals heterozygous for this trait have a child, what is the chance

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If two individuals heterozygous for this trait have a child, what is the chance that the child will not be able to roll his tongue?

A. 75%

B. 0%

C. 25%

D. 50%

E. 100%

Dec 20th, 2014

If two individuals heterozygous for this trait have a child, what is the chance that the child will not be able to roll his tongue?

A. 75%

B. 0%

C. 25%

D. 50%

E. 100%

 

Two heterozygous individual:

Aa

Aa

Mating:  Aa X Aa

           A         a

A       AA       Aa

a        Aa         aa


aa = recessive trait, cannot roll tongue

Ans: 25%  C

Dec 20th, 2014

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