Chapter 22: Descent with Modification

Question 1

Strata

Answer 1

Layes of rock that is produced by the gradual accumulation of sediment over time

Question 2

Facets of nature explained by natural selection

Answer 2

1. The unity of life
2. The diversity of life
3. The adaptability of life

Question 3

Data types that document evolutionary processes

Answer 3

1. Direct observation
2. Homology
3. Fossil record
4. Biogeography

Question 4

Homology

Answer 4

Similarities resulting from common ancestry

Homologous structures- represent variations of a structural theme that is sharred by descendents from a common ancestor

Vestigial structures- remnants fo features that once served a function for an organism’s ancestors

Question 5

Convergent evolution

Answer 5

The independent evolution of similar features in different lineages; analogous features instead of homologous

Question 6

Biogeography

Answer 6

The study of the geographic distributions of species