Through Time, the Lineage That Led to Modern Whales Shows

question 10

Multiple Choice

Through time, the lineage that led to modern whales shows a change from four-limbed land animals to aquatic animals with two limbs that function as flippers. This change is best explained by

• A) natural philosophy.
• B) creationism.
• C) the hierarchy of the biological organization of life.
• D) natural selection.
• E) feedback inhibition.

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Definitions:

Sexual Motivation

refers to the biological, emotional, cognitive, and social factors that drive and influence sexual behavior and desires.

Estrogen Levels

Refers to the amount of estrogen, a primary female sex hormone, present in the body, which plays key roles in the reproductive system and secondary sex characteristics.

Androgens

A group of hormones that play a role in male traits and reproductive activity. Present in both men and women, they are often called male hormones.

Estrogens

A group of steroid hormones that play a key role in the development and regulation of female reproductive system and secondary sexual characteristics.