Which of the Following Is True Regarding Maternal-Effect Genes

question 45

Multiple Choice

Which of the following is true regarding maternal-effect genes?

• A) Bicoid and Nanos are maternal-effect genes.
• B) A female homozygous for a loss-of-function maternal-effect gene mutation can be fully normal, but her offspring will show the phenotype.
• C) The offspring of a female homozygous for a loss-of-function maternal-effect gene mutation will show the phenotype regardless of the paternal genotype.
• D) The second-generation offspring of a male homozygous for a loss-of-function maternal-effect gene mutation can show the phenotype.
• E) All of the above.

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Definitions:

Expected To Walk

Refers to the anticipated milestone in child development where a child is expected to begin walking, typically around the age of one year.

Walk

The act of moving at a regular pace by lifting and setting down each foot in turn, never having both feet off the ground at once.

Fine Motor Skills

The abilities that involve the use of small muscles in the hands and fingers for precise movements, such as writing or buttoning.

Precise

Marked by exactness and accuracy of expression or detail.