The Following Questions Refer to the Evolutionary Tree Shown Below

question 21

Multiple Choice

The following questions refer to the evolutionary tree shown 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 labelled 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 common ancestors, labelled V-Z, has been least successful in terms of the percentage of its derived species that are extant?

• A)V
• B)W
• C)X
• D)Y

---

Definitions:

Colour Code

A system for classifying and communicating colors, often used in design, art, and marketing.

Copyright

Legal right granted to the creator of an original work, including the right to copy, distribute, and adapt the work.

Stream of Consciousness

A literary technique or narrative mode that attempts to capture the flow of thoughts and feelings running through the mind.

Perception

The process by which individuals select, organize, and interpret sensory information to form a meaningful picture of the world.