1.9.1 Artificial Selection in Action

Question 1

artificial selection

Answer 1

• the process by which farmers, animal breeders, and scientists establish new lines of plants and animals by selecting individuals with particular traits for breeding.

Question 2

natural selection

Answer 2

• difficult to study because it takes place over a long period of time and because pressures caused by the environment are difficult to predict.
• basic mechanisms underlying natural selection can be ascertained by performing experiments involving artificial selection.

Question 3

antibiotic resistance

Answer 3

• antibiotics are used long enough to kill bacteria with no resistance but not long enough to kill the bacteria with some resistance.

Question 4

Which of the following is the best definition of artificial selection

Answer 4

• selection due to human intervention

Question 5

Which of the following is not a use of artificial selection?

Answer 5

• preparing acquired traits

Question 6

The experiment conducted with Drosophilia investigating bristle density established that

Answer 6

• bristle density is a heritable trait

Question 7

Antibiotic resistance develops when

Answer 7

• antibiotics are used long enough to kill bacteria with no resistance but not long enough to kill the bacteria with some resistance.

Question 8

Artificial selection is more readily observable than natural selection because

Answer 8

• artificial selection can be conducted under controlled conditions.