Artificial Selection by Man

Q.

Artificial selection to obtain cows yielding higher milk output represents

1. Stabilizing selection as it stabilizes this character in the population

2. Directional as it pushes the mean of the character in one direction

3. Disruptive as it splits the population into two, one yielding higher output and the other lower output

4. Stabilizing followed by disruptive as it stabilizes the population to produce higher-yielding cows

Q. Which of the following cannot be considered to be a general method of evolution for any random population?

1. Natural selection
2. Genetic drift
3. Mutation
4. Antibiotic resistance

Q. Evolution always occurs through natural forces. It cannot be carried out through artificial selection.

1. True
2. False

Q. Which of the following is not an example of evolution due to human alteration of the environment?

1. DDT-resistant mosquitoes
2. Antibiotic resistance
3. Melanic and non-melanic moths
4. Evolution of marsupials

Q. Domestication can lead to evolution of a species.

1. True
2. False