What is the probability of producing a child that will phenotypically resemble the first parent listed?

What is the probability of producing a child that will phenotypically resemble the first parent listed?





a. AaBbCcDd x aabbccdd


b. aabbccdd x AABBCCDD


c. AaBbCcDd x AaBbCcDd


d. aabbccdd x aabbccddWhat is the probability of producing a child that will phenotypically resemble the first parent listed?
First you can split the genotypes into individual gene. Then you calculate the probability of the crosses to have a child with the same genotypes as the first parents.


a.


Aa x aa --%26gt; 1/2Aa : 1/2aa


Bb x bb --%26gt; 1/2Bb : 1/2bb


Cc x cc --%26gt; 1/2Cc : 1/2cc


Dd x dd --%26gt; 1/2Dd : 1/2dd


The probability of a child with genotype AaBbCcDd = 1/2 x 1/2 x 1/2 x 1/2 = 1/16





b. 0 x 0 x 0 x 0 = 0


c. 1/2 x 1/2 x 1/2 x 1/2 = 1/16


d. 1 x 1 x 1 x 1 = 1 (All would be aabbccdd)