cloning

Question 1

how to clone animals

Answer 1

1) take egg cell from donor female and remove nucleus so it is enucleated
2) do the same with an adult body cell e.g. skin cell
3) take nucleus from adult cell and put into enucleated egg cell
4) stimulate with electric shock so it begins to divide by mitosis, forming an embryo
5) implant embryo into uterus of surrogate mother so it develops into foetus

Question 2

why is it important to use an egg cell

Answer 2

as it is a stem cell so can develop into anything

Question 3

what is a transgenic organism

Answer 3

an organism with genes from another species

Question 4

how to clone with embryo transplant

Answer 4

1) pick male and female cows with desirable traits
2) take sperm from male and fertilise egg from female to make a zygote
3) allow zygote to develop into embryo
4) separate into lots of smaller embryos
5) implant each smaller embryo into surrogate mothers
6) offspring will all be identical