Unit Three- Evidence of Evolution

Question 1

hoe does fossil evidence work

Answer 1

-various depths, fossils appear in chronological order

Question 2

what do transitional fossils do

Answer 2

show intermediary link between two groups of organisms with slightly different features

Question 3

biogeography evidence

Answer 3

study of past and present geographical distribution of organisms

Question 4

3 types of anatomy structured evidence

Answer 4

1. homologous
2. analogous
3. vestigial

Question 5

homologous structures

Answer 5

-similar structural elements but different function

—> come from common ancestor

Question 6

analogous structure

Answer 6

structures that do not have common evolutionary origin but preform similar functions

—> similar evolutionary pressures

Question 7

vestigial structure

Answer 7

remnants of structures that many have important functions in an ancestral species

Question 8

embryological evidence

Answer 8

closely related organisms have similar stage of development

Question 9

DNA evidence

Answer 9

*comapre DNA sequence & protein
-similar patterns in DNA sequences must have been inherited from a common ancestor
-amino acid in protein infected closely related