Lecture 15 Evidence on Evolution

Question 1

How does the Extinct Mammal support Darwin’s theory of evolutioon

Answer 1

This is an example of how geology is used to prove evolution. The way it works is that fossils demonstrate how certain traits or animals have evolved into the current versions of them that we see today

Question 2

Vestigial Characters

Answer 2

These are things that once served a purpose for an organism but no longer contribute to its fitness, so they are just remnants of evolution

Question 3

Example of Vestigial characters

Answer 3

ear muscle
tailbone
goosebumps
wings on flightless birds
eye sockets on blind cavefish

Question 4

What is homology

Answer 4

Shared functions and mechanisms of features

Question 5

How is homology related to the evidence of evolution

Answer 5

• 500 genomes are shared across all life forms
  bones are present in life forms that have been adapted or changed for unique purposes

Question 6

Adaptive Radiation

Answer 6

Evolution of phenotypic and ecological traits that arise from speciation these are Darwin’s finches

Question 7

Features that identify an adaptive radiation

Answer 7

common ancestor
rapid speciation
phenotype-environment related

Question 8

How is biogeography used as evidence for evolution

Answer 8

different species in similar conditions will adopt similar traits

Question 9

List all the evidence that can be used to support evolution

Answer 9

geology
homology
biogeography
domestication