Evidence for Evolution ( W1 L2)

Question 1

“Perfect Solutions”

Answer 1

Species that are not great examples of evolution and thus used by creationists to prove that they were “made” and not evolved

Question 2

Homology

Answer 2

A trait possessed by two or more species that is derived with or without modification from their common ancestor

Similarity in structure and anatomical positions, but may function differently

Indicates a common ancestor

Question 3

Genetic Homology

Answer 3

Identical or similar gene code in DNA from separate species

Question 4

Analogy

Answer 4

traits that are similar in function but differ in basic structure (although they often look alike)

similar because of convergent evolution, not common ancestors

Question 5

Convergent Evolution

Answer 5

The independent evolution of similar features in different lineages which leads to analogous structures

due to organisms adapting in similar environments in similar ways

Question 6

Vestigial Traits

Answer 6

Rudimentary traits that are homologous to fully functional traits in related species

Remnants of features that served a function in the organisms ancestor but does not necessarily serve a function in the organism

Question 7

Transitional Form

Answer 7

A species that exhibits traits common to ancestral and derived groups, especially when the groups are sharply differentiated

ex. feathers, teeth, limbs

Question 8

Biogeography

Answer 8

the scientific study of geographic distribution of species

Question 9

Law of Succession

Answer 9

Living species in an area are frequently closely related to fossils in that area providing evidence that the species evoled there

Question 10

Endemic Biotas

Answer 10

Organisms found in limited regions along with close relatives

ex. that organism only lives in one geographic location in the world (i.g. channel islands)