To Inherit an Autosomal Recessive Disorder Requires the Person Receive

question 52

Multiple Choice

To inherit an autosomal recessive disorder requires the person receive the disease causing allele from

• A)the father only.
• B)the mother only.
• C)only the parent having the disease.
• D)only one parent who is homozygous recessive for the disease.
• E)both parents.

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Definitions:

SRY Gene

Located on the Y chromosome in males, this gene codes for a transcription factor that binds to regulatory DNA. At about 5 weeks gestation, it turns on genes that start the production of other proteins responsible for the development of gonads into testes.

Zygotes

The initial cell formed when a new organism is conceived, created by the fusion of sperm and egg cells.

XY Chromosome

The combination of chromosomes characterized as male in humans, where a Y chromosome inherited from the father pairs with an X chromosome from the mother.