Biology - Selective Breeding

what is the definition of selective breeding

to select individuals with desirable characteristics and breed them together

what are three reasons why plants are selectively bred

1. disease resistance

2. increased crop yield

3. resistance to weather conditions

4. better tasting fruits

why is selective breeding bad?

can lead to inbreeding which leads to a reduction in the gene pool which could lead to inheriting harmful genetic defects and vulnerability to new diseases

why are cows, goats, and sheep selectively bred

to increase production of milk and meat

why are chickens selectively bred

increase the size of eggs

what is the difference between artificial and natural selection

1. artificial is done by humans whereas natural is done by nature over many generations

2. artificial is done to benefit humans and not necessarily the animal, whereas natural is done for the survival of the animal

3. artificial takes less time then natural