WEEK 8: BASIS OF EVOLUTION

Question 1

what are the 4 examples of evidence for evolution?

Answer 1

1. fossil record
2. sims/diffs between living species
3. natural selection acting within species
4. observing evolution in real time

Question 2

(in terms of (2)- sims/diffs between living species), what is analogous?

Answer 2

functional similarity- not based on evolution but based on similarity of use

Question 3

(in terms of (2)- sims/diffs between living species), what is homologous? and give an example

Answer 3

similarity in different species based on their descent from a common ancestor.
(i.e.) forelimbs in humans, bats and deer- common early mammalian ancestor.

Question 4

(in terms of (3)- natural selection acting within species), explain it

Answer 4

huge number of individuals produced
insufficient resources for all, many die
individuals vary in attributes
individuals with attributes better suited less likely to die
these individuals over represented in next generation

Question 5

(in terms of (4)- observing evolution in real time) explain it

Answer 5

evolution can be produced experimentally

on a small scale evolution can be observed in action (watch lecture for exmaple)