Both Parents Are Heterozygous for Tay-Sachs Disease (An Autosomal Recessive

question 51

Multiple Choice

Both parents are heterozygous for Tay-Sachs disease (an autosomal recessive disorder) . Three children in a row were born with Tay-Sachs disease. What is the chance that a fourth child will have Tay-Sachs disease?

• A) 0%
• B) 25%
• C) 50%
• D) 75%
• E) 100%

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Definitions:

Pubertal Hormones

Hormones that trigger the physical changes associated with puberty, including sexual development and growth spurts.

Adolescent Mood

The emotional state or prevailing feeling often experienced during adolescence, marked by rapid emotional changes and sensitivity.

Transition

The process or a period of changing from one state or condition to another.

Middle School

An educational institution serving early adolescents, usually between the grades of 6 and 8, acting as a bridge between elementary school and high school.