Tay Sachs Disease Is Caused by a Recessive Mutation on Chromosome

question 56

Multiple Choice

Tay Sachs disease is caused by a recessive mutation on chromosome 15,and 1 of every 27 members of the Old Order Amish community of Pennsylvania carry a recessive allele.What is the chance that an Old Order Amish man who carries the allele will have a child with Tay Sachs? (Remember,the community restricts marriage to other members of the community. )

• A) 1/4 (25%)chance
• B) 1/27 (3.7%)chance
• C) 100% chance
• D) 1/27 × 1/4 (0.926%)chance
• E) 1/2 (50%)chance

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Definitions:

Memory Loss

A condition where a person experiences an inability to remember information, events, or experiences, often caused by brain injury, disease, or psychological trauma.

Dissociative Identity Disorder

A psychological condition where a person exhibits two or more distinct and alternating personalities.

Multiple Personality Disorder

Now known as Dissociative Identity Disorder, it is a mental condition characterized by the presence of two or more distinct personality states.

Split Personality

An outdated term, often incorrectly used to describe Dissociative Identity Disorder, which involves the presence of two or more distinct personality states.