Topic 7.3 - Artificial Selection

Question 1

artificial selection

Answer 1

the process by which humans select desirable traits in other species and selectively breed individuals with the desired traits

Question 2

where is artificial selection commonly used?

Answer 2

in agricultural and economic practices

Question 3

what are some examples of artificial selection

Answer 3

❥ growing certain crops with specific characteristics
❥ breeding certain animals for sport/sale

Question 4

what can artificial selection result in?

Answer 4

❥ phenotypes that would not normally exist in nature
❥ can lead to more OR less genetic diversity

Question 5

how does artificial selection work?

Answer 5

humans pick a trait that is desirable and choose it to breed individuals with that trait to get the desired outcome

Question 6

how can artificial selection impact genetic diversity?

Answer 6

genetic diversity can change overtime because the same traits that are selected are becoming more and more common

Question 7

convergent evolution

Answer 7

the process by which similar environmental conditions select for similar traits in different populations or different species over time

Question 8

where can similar traits be observed?

Answer 8

in distantly related or unrelated species

Question 9

analogous structure

Answer 9

features of different species that are similar in function but not necessarily in structure and which do not derive from a common ancestral feature

Question 10

what is an example of analogous structures?

Answer 10

the selective pressure of similar aquatic environments can select for streamlined bodies in vertebrates (ex. in fish and mammals)