Destroyer 228

[drgreen]

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wouldn't it be 25%
He says, if both parents are carriers, what is the probability of having an effected child.

 

[Danny289]

wouldn't it be 25%
He says, if both parents are carriers, what is the probability of having an effected child.

think about phenotype, talking about effected not carrier. yes you are right
Genotype will be 1 child with normal genotype 2 carrier and one homozygos that will show phenotype.

 

[tisler]

wouldn't it be 25%
He says, if both parents are carriers, what is the probability of having an effected child.

But the question also says that it's 1 in 50 people that are homozygous recessive so you need to count that in if you didn't.

 

[klutzy1987]

But the question also says that it's 1 in 50 people that are homozygous recessive so you need to count that in if you didn't.

Correct Dr. Green the question is worded poorly. If you know that they already are carriers then the 1/50 is insignifigant.