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Question 17N.1.HL.TZ0.12

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Date November 2017 Marks available [Maximum mark: 1] Reference code 17N.1.HL.TZ0.12
Level HL Paper 1 Time zone TZ0
Command term Deduce Question number 12 Adapted from N/A
12.
[Maximum mark: 1]
17N.1.HL.TZ0.12

A dominant autosomal allele for lactase persistence allows humans to digest milk as adults. People who lack this allele are lactose intolerant in adulthood.

 

If J and K have a child L, what is the probability that L will be lactase persistent?

A. 25 %

B. 50 %

C. 75 %

D. 100 %

[1]

Markscheme

 B

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