Selective breeding

Question 1

Drfinition of it

Answer 1

Humans artifically select plants animals that r going to breed so thatt the genes for particular characteristics remain in the population

Question 2

3 reasons why?

Answer 2

Useful atractive
Animals + meat milk
Crops disease resistant
Plants bigger fruit

Question 3

How is s breeding useful?

Answer 3

Agriculture genetic variation means some cattle have better characteristics for producing meat than others.Improve meat yields farmer select cows bulls with these c and breed them together.Repeating over several generation s farmer get cows with very high meat yield

Question 4

Disadvantages of s breeding

Answer 4

Reduces gene pool bc best animals plants a always used 4 breeding closely related inbreeding
Can cause health problems more chance of organism inheriting genetic defects when genepool limited
New disease appears not much variation in population less chance of resistance alleles being present
Stock closely related all likely to die from disease