quiz1

Question 1

How does evolution occur in populations?
(5 mechanisms)

Answer 1

Shrinking population, non-random mating, mutations, gene flow, and natural selection.

Question 2

5 reasons that show natural selection exists?

Answer 2

Direct observation, homologies/analogies, molecular evidence, fossils, and biogeography.

Question 3

How to get genetic variation?
(4 ways)

Answer 3

Mutations, rapid reproduction, change in # of genes, sexual reproduction.

Question 4

characteristics of living things

Answer 4

complex/organized structure, responds to stimuli, maintains homeostasis, grows/reproduces, convert energy from environment, and evolves.

Question 5

Founder effect

Answer 5

moves and creates a new population (contains original + new population))

Question 6

Bottleneck effect

Answer 6

5 mechanisms of evolution
something happened that shrunk the population (no longer has og pop, just a shrunken pop).

Question 7

non-random mating

Answer 7

5 mechanisms of evolution
associative: choose like mate.
non-associative: choose not like mate.

Question 8

mutations

Answer 8

5 mechanisms of evolution also genetic variation.
changes genetic code, must be in germ cell, ultimate way to get genetic variation.

Question 9

gene flow

Answer 9

5 mechanisms of evolution
moving genes from one population to another.
emigration: indv. leave population
immigration: new indv. join population

Question 10

natural selection

Answer 10

adaptive mechanismm trait that has the most advantages = survives/reproduces.

Question 11

3 modes of natural selection

Answer 11

1.directional: favors one extreme
2.disruptive: favors both extremes
3.stabilizing: favors the avg.

Question 12

Hardy-weinberg equilibrium equations

Answer 12

p+q= 1 and p^2+2pq+q^2=1