Question

Lactose intolerance is autosomal dominant. If a male parent is lactose intolerant but the female parent and the first child are not, what is the probability that their second child will be lactose intolerant? 3/4 (0.75, or 75%) 1/2 (0.5, or 50%) 1/3 (0.33, or 33%) 2/3 (0.67, or 67%) 1/4 (0.25, or 25%)

Name: lactose intolerance is autosomal dominant if a male parent is lactose intolerant but the female parent and the first child are not what is the probability that their second child will be lac 52887
Uploaded: 2023-08-27T13:16:00-08:00
Duration: 3 min 15 s
Channel: Sri K
Description: lactose intolerance is autosomal dominant if a male parent is lactose intolerant but the female parent and the first child are not what is the probability that their second child will be lac 52887

          Lactose intolerance is autosomal dominant. If a male parent is lactose intolerant but the female parent and the first child are not, what is the probability that their second child will be lactose intolerant?
3/4 (0.75, or 75%)
1/2 (0.5, or 50%)
1/3 (0.33, or 33%)
2/3 (0.67, or 67%)
1/4 (0.25, or 25%)

Added by Jeremy B.

Biology for AP Courses

Julianne Zedalis, John Eggebrecht

Instant Answer

Solved by Expert Sri K

08/27/2023

Step 1

Since lactose intolerance is autosomal dominant, we can denote the lactose intolerant allele as "L" and the normal allele as "l". The lactose intolerant male parent must have the genotype "LL" or "Ll". However, since the female parent and the first child are not Show more…

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Lactose intolerance is autosomal dominant. If a male parent is lactose intolerant but the female parent and the first child are not, what is the probability that their second child will be lactose intolerant? 3/4 (0.75, or 75%) 1/2 (0.5, or 50%) 1/3 (0.33, or 33%) 2/3 (0.67, or 67%) 1/4 (0.25, or 25%)