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In cats the genotype BB is black, Bb is tortoise shell, and bb is yellow. The gene is...
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To know the possible genotype of the offspring, we should use the punnet square.
Male `X^B Y`
Female `X^B X^b`
`X^B` `X^BX^B` `X^BY`
`X^b` `X^BX^b` `X^bY`
25% Black males
25% Yellow males
0% Tortoise shell male
25% Black female
25% Tortoise shell female
0% Yellow Female
It would be very rare to find a tortoise shell male because tortoise shell can be only achieved if there are two X chromosomes. If that happens, there will be an unequal number of gametes. The resulting genotype would be `X^BX^bY` which is apparently abnormal.
Posted by jerichorayel on April 15, 2013 at 4:10 PM (Answer #1)
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