selective breeding Flashcards
1
Q
what are dogs selectively bred for
A
to have a gentle nature
2
Q
what are food crops selectively bred for
A
disease resistant
3
Q
what are cows selectively bred for
A
produce more meat/milk
4
Q
what are plants selectively bred for
A
to produce large or unusual flowers
5
Q
how does selective breeding work
eg used -> cows for meat
A
- take mixed population of cows and select largest male and female
- breed
- continue over many generations until all offspring are large
6
Q
what are the problems with selected breeding
A
inbreeding-> prone to disease or inherited defects
