Week 5

Question 1

Describe domestication:

Answer 1

Human select which individuals to breed for the next generation based on a trait.

Question 2

Describe how directional artificial selection work

Answer 2

If you want to apply directional selection you truncate selection of a group allowing only a subset to contribute to the subsequent generations. This lead to a change in the population mean.

Question 3

What’s heritability of a trait?

Answer 3

It’s the degree of response and mantainance of the trait in further generations.

Question 4

What happen when you stop pressuring a population with artificial selection?

Answer 4

The variation tend to return to the mean beacuse recessive alleles are still present (even if hidden) in the population.

Question 5

Describe convergent evolution

Answer 5

The independent development of similar structures in organisms that are not directly related.

Question 6

Describe parallel evolution:

Answer 6

Shared evolutionary trajectory of closely related organisms.

Question 7

Describe ecomorphological convergence:

Answer 7

The same morphology evolve in different species because they occupy the same ecological niches.

Question 8

Describe the law of independent assortment:

Answer 8

Alleles at different gene locus assort indepenently of one another during the formation of gametes