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Cloning - Science Fiction or Science Fact
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Clones can be made naturally…

Identical twins are clones of each other

fertilisation

Fertilised egg cell

splits

Sperm cell

Egg cell

Baby

Baby

Slide 16

Twin Welsh Lambs

Twin Welsh Lambs

Clones of each other but not of their parents

Slide 17

Recently cloned animals

Recently cloned animals

Slide 18

Dolly The Sheep

Dolly The Sheep

Hello Dolly Dolly was the first mammal cloned from an adult cell.

She was born in 1996 and died in 2003.

She was 6 when she died, about half the usual age for a sheep

Slide 19

Making Dolly the sheep

Making Dolly the sheep

Slide 20

Problems with cloning mammals

Problems with cloning mammals

Dolly developed premature arthritis and showed signs of aging too quickly

She died 6 years old which is half the natural age of a sheep

She is now owned by the National Museum in Scotland

Slide 21

Reproduction and Cloning Recap

Reproduction and Cloning Recap

1. Are Sonny and Cher clones? Explain your answer.

2. If I wanted to clone Sonny how would I do it?

3. What problems may I encounter if I try to clone Sonny.

Slide 22

Next lesson

Next lesson

Uses of cloning

Should we clone mammals?

Will we clone humans? What would this mean?

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