6.2 artificial selection

Question 1

what is artificial selection?

Answer 1

artificial selection is the selective breeding of organisms to produce offspring with desirable characteristics

Question 2

what are the agents of selection during artificial selection?

Answer 2

humans are the agents of selection during artificial selection

Question 4

why does artificial selection occur?

Answer 4

artificial selection occurs because humans want to breed organisms with the desired phenotypes

Question 5

what are examples of new breeds of an organisms produced through artificial selection? (12)

Answer 5

examples of new breeds of organisms produced through artificial selection includes:

• cereal
• rice
• fruits and vegetables
• dogs
• cats
• pigeons
• poultry
• cattle
• horses
• sheeps and goats

Question 6

what may new breeds be produced by?

Answer 6

new breeds may be produced by selective breeding programmes

Question 7

how long does a selective breeding programme last for?

Answer 7

a selective breeding programme lasts for 20 years

Question 8

what does interbreeding the individuals with the desired phenotypes do?

Answer 8

interbreeding the organisms with the desired phenotypes selects the genotypes that contribute to the gene pool of the next generation of those organisms