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Home Q & A Board Biology-Related Homework Help Genetics and Developmental Biology
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irina irina
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11 years ago
I both parents are EX. Dd would the percent chance of the child having this dominant trait be 100% ?
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wrote...
#1
11 years ago
No, it would be 75%. If both parents pass on the recessive allele, the child will not have the dominant trait.
wrote...
#2
11 years ago
No, 75%.

P = Dd x Dd

..........D.........d
.....--------------------
D...|..DD......Dd
d...|..Dd.......dd

DD = 25%
Dd = 50%
dd = 25%

DD and Dd individuals have the dominant trait, so that's 50% + 25% = 75% of offspring that are expected to had the dominant trait.
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