Review for Biology Flashcard Unit 5a

Front

What is Apoptosis?

Back

Programmed cell death.

Front

Which species have the fewest DNA differences according to the DNA comparison?

Back

Species 1 and Species 2.

Front

Are the Before and After trees the same thing?

Back

True.

Front

What derived characteristic is shared among tigers and house cats?

Back

Retractable claws.

Front

Which two species split from a common ancestor the longest ago?

Back

Species 1 and Species 4.

Front

What is a Cladogram?

Back

A diagram that shows the evolutionary relationships among various biological species.

Front

Define 'Common Ancestor'.

Back

An ancestor that two or more descendant species have in common.

Front

What is the significance of DNA comparison in biology?

Back

It helps determine the evolutionary relationships between species.

Front

What does 'derived characteristic' mean?

Back

A trait that is present in an organism but was absent in the last common ancestor of the group.

Front

What is the difference between Mitosis and Meiosis?

Back

Mitosis is cell division for growth and repair, while Meiosis is cell division for sexual reproduction.