5 Selective Breeding

Question 1

What are the steps taken to select a particular feature in an organism?

Answer 1

choose individuals with the desired feature
let only these individuals reproduce
choose the offspring that have desired feature
let only these individuals reproduce
repeat over many generations

Question 2

E.g. what would you do if you wanted a variety of cow that produced lots of milk?

Answer 2

select cows in herd that produce most milk
let only these cows reproduce
select offspring that produce most milk
let only these individuals reproduce
repeat over many generations

Question 3

What is the key to success in selective breeding?

Answer 3

don’t allow individuals with undesirable features to breed

Question 4

What can selective breeding produce?

Answer 4

hens that lay big eggs of particular colour
cattle that produce lots of milk
tomato plants that produce lots of tomatoes
crops that are resistant to certain plant diseases

Question 5

Inbreeding:

Answer 5

reduces variation
reduces likelihood of population surviving if new disease was introduced
more recessive disease would come out