Sexual Dimorphism

question 22

Multiple Choice

Sexual dimorphism:

• A) refers to the onset of puberty.
• B) refers to the difference between male and female behavior.
• C) refers to the development of male and female primary characteristics.
• D) refers to the difference in physical attributes of males and females.

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Definitions:

Heterochromatin

Heterochromatin is a tightly packed form of DNA, which makes it transcriptionally inactive, contributing to the regulation of genes and maintenance of chromosome structure.

Kinases

Enzymes that catalyze the transfer of phosphate groups from ATP to acceptor molecules. See protein kinases. Compare with phosphatases.

Phosphate Group

A functional group consisting of a phosphorus atom covalently bonded to four oxygen atoms, critical in the structure of nucleic acids and ATP.

Protein Activity

Refers to the functional capacity of a protein to perform its biochemical role, which may include catalyzing reactions, binding to other molecules, or structural support.