Animal cloning 2

Question 1

What is somatic cell nuclear transfer?

Answer 1

• cloning an adult
• taking nucleus from an adult somatic (body) cell and transferring it to an enucleated ovum of a female from the same species
• embryo placed into uterus of third embryo

Question 2

How is the combined cell triggered to divide?

Answer 2

• tiny electric shock used to fuse egg and nucleus and stimulate division

Question 3

How is the animal not an exact clone

Answer 3

• mitochondrial DNA comes from the egg cell

Question 4

What is the problem with reproductuve cloning?

Answer 4

• premautre ageing
• although work is being done to avoid this

Question 5

What is pharming? How is it done?

Answer 5

• SCNT can be used in pharming
• pharming is the production of animals which have been genetically engineered to produce theraputing human proteins in their milk
• also can be used to produce GM animals which grow organs that have the potential to be used in human transplants

Question 6

What are the arguments for animal cloning?

Answer 6

• desireable characteristics are always passed on
• infertile animals can be reproduced
• increasing the population of endangered species helps to preserve biodiversity
• anmlas can be cloned any time. dont ahve to wait until breeding season
• treatment, less sufering for people

Question 7

What are the arguments against animal cloning?

Answer 7

• diffiicult, time consuming and expensivng
• less genetic variability
  
  • underrable characteristics always passed on
  • suseptible to same disease
• may not live as long as natural
  
  • unethical
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