#Question id: 4709
#Unit 11. Evolution and Behavior
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.
In Darwin's tree of life, each fork in the tree represents ________.
#Question id: 4335
#Unit 3. Fundamental Processes
Which of the following mutations would be most likely to have a harmful effect on an organism?
#Question id: 11711
#Unit 9. Diversity of Life Forms
The Irish potato famine was caused by an organism that belongs to which group?
#Question id: 24447
#Unit 13. Methods in Biology
#Question id: 21123
#Unit 12. Applied Biology