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Assume the gene for dimples, d, is recessive. Then assume that two individuals with the...

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dgault11 | (Level 1) Honors

Posted July 1, 2013 at 12:14 PM via web

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Assume the gene for dimples, d, is recessive. Then assume that two individuals with the genotypes Dd and dd mate. Create a Punnett square for this mating and state the probability that their offspring will have dimples.

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jerichorayel | College Teacher | (Level 1) Senior Educator

Posted July 1, 2013 at 1:57 PM (Answer #1)

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The punnett square is generally a method in determining the genes that the offspring would inherit from their parents. The Punnett square for the two individuals with genotypes Dd and dd can be expressed as:

Punnett square

       D       d

d    Dd      dd

d    Dd      dd

Where:

Dd = heterozygous dominant or individuals with no dimples

dd = recessive trait or individuals with dimples

 

Results: 

Genotype Dd (phenotype: no dimples) = 50% 

Genotype dd (phenotype: with dimples) = 50%

 

The probability for the offspring to have dimples is 50%

Sources:

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