Lecture 20B part i

Question 1

what is evolution

Answer 1

change in allele frequency in a population overtime

Question 2

what are the five mechanisms of evolution

Answer 2

natural selection
sexual selection
genetic drift
gene flow
mutations

Question 3

Evolution is not…

Answer 3

*based on organisms
*always slow
*just natural selection

*something that happens to individuals

• progressing toward some ideal state

*humans evolving from monkeys