Lecture 3: What Darwin Saw (Evidence for Evolution)

Question 1

Where did HMS Beagle go?

Answer 1

Mostly South America, oceanic islands

Question 2

What did Darwin collect on his voyage?

Answer 2

fossils, flora, fauna (he found fossils of extinct species)

Question 3

What is fishapod?

Answer 3

Tiktaalik Roseae, 375 million years old found on Ellesmere Island, Nunavut.

Question 4

Ear muscles, appendix, tailbone, goosebumps are evidence of what?

Answer 4

Vestigial traits

Question 5

What are the Galapagos Islands?

Answer 5

15 main islands of volcanic origin (oldest are 5-10 million years old). Darwin spent 5 weeks on them making observations and collecting specimen.

Question 6

Peter and Rosemary Grant

Answer 6

Conducted 35 year study of natural selection in Galapagos Finches on Daphne Major

Question 7

Adaptive radiation

Answer 7

Evolution of ecological and phenotypic diversity within a rapidly multiplying lineage as a result of speciation

Question 8

Four features that identify adaptive radiation

Answer 8

1. Recent common ancestry from single species
2. Phenotype-environment correlation
3. trait utility
4. rapid speciation