Semester 1 Final Exam Review Part 2

Survival of the fittest or when favorable adaptations reproduce faster is called what?

• Evolution
• Adaptation
• Natural selection
• Fossilization

Structures with the same parts have different functions; suggests that organisms share a common ancestry

• vestigial structures
• homologous structures
• adaptive radiation
• fossil

What do we call a change in a species over time?

• Adaptation

• Evolution

• Extinction

• Environmental influences

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 are advantageous traits more likely to be passed onto offspring?

• Because they are more likely to survive and reproduce.
• Because they come from dominant alleles.
• Because they come from recessive alleles.
• Because the trait is an acquired phenotype.

Which of these best represents a time period in which an organism could evolve?

• 5 days
• 100 years
• 10,000 years
• 2 decades

A theory has significant evidence to support it.  True or False

• True
• False

The ability of an organism to survive and reproduce in its specific environment 

• diversity.
• evolution
• adaptation
•  fitness

The opossum and kangaroo both incubate their young in a pouch. This provides evidence that they---

• are descended from a common ancestor
• Have very similar skeletal structures
• belong to the same species
• must range great distances to eat

What is a scientific theory?

• An educated guess

• A known fact

• Absolute and unchangeable

• the best explanation for a set of data or observations