Speciation Is an Important Component of Evolution Because It

question 81

Multiple Choice

Speciation is an important component of evolution because it

• A) generates the variation on which natural selection acts.
• B) generates the variation on which genetic drift and mutations act.
• C) enabled Charles Darwin to perceive the mechanisms of evolution.
• D) generates the high extinction rates that drive evolutionary change.
• E) has resulted in a world with millions of species, each adapted for a particular way of life.

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Definitions:

Infundibulum

A funnel-shaped structure, such as the stalk connecting the pituitary gland to the hypothalamus, or the distal end of the fallopian tubes.

Ampulla

An enlargement of a duct or canal that can store or slow the flow of fluids, found in various anatomical locations.

Oviducts

Tubes through which an ovum or egg passes from an ovary. Also known as Fallopian tubes in humans, they are involved in the transport of eggs and are the site of fertilization.

Fallopian Tubes

Tubes that extend from the lateral end of each ovary to the uterus, providing the path for the egg to travel during ovulation.