selective breeding

Question 1

what are dogs selectively bred for

Answer 1

to have a gentle nature

Question 2

what are food crops selectively bred for

Answer 2

disease resistant

Question 3

what are cows selectively bred for

Answer 3

produce more meat/milk

Question 4

what are plants selectively bred for

Answer 4

to produce large or unusual flowers

Question 5

how does selective breeding work

eg used -> cows for meat

Answer 5

1. take mixed population of cows and select largest male and female
2. breed
3. continue over many generations until all offspring are large

Question 6

what are the problems with selected breeding

Answer 6

inbreeding-> prone to disease or inherited defects