Evolution Review

What is a fossil?

• the remains or physical evidence of an organism preserved by geologic processes
• fossils can be preserved in rock, amber, asphalt, or ice
• any naturally preserved evidence of animal activity
• fossil of an organism that lived during a relatively short period of time

Which best describes the phrase survival of the fittest?

• strongest in a population are most successful

• fastest in a population are most successful

• those that can survive and reproduce are most successful

• those that can live the longest are most successful

What is natural selection?

• Your natural fate is decided from birth
• Nature actively chooses who surivives
• Those best suited to demands of environment surivie
• The weakest of a species surivie

The forelimbs of mammals have similar anatomy because these groups descended from a recent common ancestor. Their bone structure is an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

Many different groups of organisms have wings, even though they do not share a recent common ancestor. This is because they evolved in environments with similar selective pressures. Wings are an example of a(n) ______________ structure.

• vestigial

• analogous

• homologous

Below are the % similarities of DNA between whales and other species. Based on this, which are whales most closely related to?

• Pig, 68.4%

• Hippo, 83.4%

• Mouse, 38.4%

The disappearance of a species.

• Evolution
• Extinction
• Migration
• Mutation

All the individuals of a species that live in a particular area are called a

• variation
• population
• fossil
• group

Two organisms that are closely related would have

• very similar DNA sequence
• exactly the same DNA sequences
• no proteins in common
• completely different DNA sequence

Why do embryologist study embryos?

• to see if they are related
• to understand adaptations
• to determine the age
• to learn what parents are vestigial