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Nat2105 [25]
4 years ago
9

Galactosemia is a recessive human disease that is treatable by restricting lactose and glucose in the diet. susan smithers and h

er husband are both heterozygous for the galactosemia gene. if susan and her husband have four children, what is the probability that: (1 point each)
Biology
1 answer:
Deffense [45]4 years ago
7 0

There are 3 exclusive mutually birth orders that could

make two affecteds and 1 unaffected - unaffected child first born, unaffected child

second born, and unaffected child third born. Thus, there is a 3/64 + 3/64 + 3/64

= 9/64 chance that 2 out of 3 children will be affected.

 

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