The pedigree below shows inheritance of Tay-Sachs disease, an autosomal recessive trait, in two unrelated families. The indicated couple (II1.2 and II.3) would like to have children. What is the probability that, if the couple has 3 children, none of them will be affected by Tay-Sachs disease? Answer in fraction form; no additional words. Example: 1/4

Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN:9781305251052
Author:Michael Cummings
Publisher:Michael Cummings
Chapter4: Pedigree Analysis In Human Genetics
Section: Chapter Questions
Problem 3QP: Pedigree Analysis Is a Basic Method in Human Genetics Using the pedigree provided, answer the...
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what is the probability that if the couple has three children, none of them will be affected by the syndrome. refer to the attached picture and show solution.

is it 107/144? can you verify my answer. please refer to the picture below.

 

The pedigree below shows inheritance of Tay-Sachs disease, an autosomal recessive trait, in two unrelated families. The indicated
couple (II1.2 and II.3) would like to have children. What is the probability that, if the couple has 3 children, none of them will be
affected by Tay-Sachs disease?
Answer in fraction form; no additional words. Example: 1/4
Transcribed Image Text:The pedigree below shows inheritance of Tay-Sachs disease, an autosomal recessive trait, in two unrelated families. The indicated couple (II1.2 and II.3) would like to have children. What is the probability that, if the couple has 3 children, none of them will be affected by Tay-Sachs disease? Answer in fraction form; no additional words. Example: 1/4
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