The Following Questions Refer to the Evolutionary Tree in the Figure

question 31

Multiple Choice

The following questions refer to the evolutionary tree in the figure below.
The horizontal axis of the cladogram depicted below is a timeline that extends from 100,000 years ago to the present; the vertical axis represents nothing in particular. The labeled branch points on the tree (V-Z) represent various common ancestors. Let's say that only since 50,000 years ago has there been enough variation between the lineages depicted here to separate them into distinct species, and only the tips of the lineages on this tree represent distinct species.

-Which of the five species, labeled V-Z, is the common ancestor of the fewest number of species?

• A) V
• B) W
• C) Y
• D) Z

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Definitions:

Neonate

A term referring to a newborn child, especially within the first 28 days after birth.

Reproductive Systems

A set of organs within an organism which work together for the purpose of reproduction.

Gamete Production

The process of forming gametes, which are reproductive cells (sperm in males and eggs in females) used in sexual reproduction.

Contractual Capacity

The legal ability of a party to enter into a binding contract, often related to age and mental competency.