EBK BIOLOGY: CONCEPTS AND APPLICATIONS
EBK BIOLOGY: CONCEPTS AND APPLICATIONS
9th Edition
ISBN: 8220100477805
Author: STARR
Publisher: CENGAGE L
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Chapter 14, Problem 9SQ

Alleles for Tay-Sachs disease are inherited in an autosomal recessive pattern. Why would two parents with a normal phenotype have a child with Tay-Sachs?

a. Both parents are homozygous for a Tay-Sachs allele.
b. Both parents are heterozygous for a Tay-Sachs allele.
c. New mutations gave rise to Tay-Sachs in the child.
d. b or c
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