Microevolution

Question 1

macroevolution

Answer 1

“grand scale” changes, such as speciation (a result of microevolution and chance events)

Question 2

alpha and beta-thalassemia

Answer 2

• heterozygote form promotes malarial resistance, so the recessive gene stays in the population even though the recessive homozygote is diseased

Question 3

cheetahs

Answer 3

• 2 bottleneck events -> less genetic diversity

Question 4

Hardy-Weinberg equilibrium: equation and 5 conditions?

Answer 4

p^2 + 2pq + q^2 = 1
- large population
- random mating
- no migration
- no selection
- no mutation

Question 5

balancing selection

Answer 5

• genetic variation is maintained for longer than would be expected by random chance
• heterozygous advantage, frequency-dependent selection