Lecture 13 - Population Biology

Question 1

Robert MacArthur and E.O Wilson

Answer 1

1. Observer species on different islands
2. Fumigated
3. Observed which came back

Question 2

Inbreeding Depression

Answer 2

Reduced fitness of a given population as a result of breeding of related individuals

Question 3

Genetics

Answer 3

Nucleotides
Basic unit of genetics
Make up our chromosomes
3 groups → Codons (Determine amino acid structure of proteins) → Chromosomes

Question 4

Natural Selection

Answer 4

1. Variation in the trait
2. Variation in trait leads to reproductive success
3. Variation has a genetic basis

Question 5

Natural Selection
Directional Selection

Answer 5

One trait being favored, one being eliminated

Question 6

Natural Selection
Stabilizing Selection

Answer 6

A form of natural selection where in individuals w/ moderate or average phenotypes are more fit

Question 7

Natural Selection
Disruptive Selection

Answer 7

Changes in population genetics in which extreme values for a trait are favored over intermediate values

Question 8

What drives natural Selection?
Predation

Answer 8

Coevolution

Batesian Mimicry
Harmless species, mimic for protection

Mullerian Mimicry
Multiple species, dangerous, common coloration

Mixed Mimicry
Multiple mimics at once

Question 9

What drives natural Selection?
2. Competition

Answer 9

Habitat, resources, mates

Question 10

What drives natural Selection?
3. Non-living environment

Answer 10

Temperature, rainfall, substrate size

Question 11

Competitive Exclusion Principle

Answer 11

Two species that occupy the same area and compete for exactly the same resources in the same habitat

Question 12

Resource Partitioning through adaptation

Answer 12

Evolution by natural selection of ten promotes new ways for species to utilize different parts of the resources
Darwin Finches

Question 13

MVP (minimum viable population)