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Cloning  A clone is an organism or piece of genetic material that is genetically identical to one that was preexisting  Making a clone in a lab is called.

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Presentation on theme: "Cloning  A clone is an organism or piece of genetic material that is genetically identical to one that was preexisting  Making a clone in a lab is called."— Presentation transcript:

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2 Cloning  A clone is an organism or piece of genetic material that is genetically identical to one that was preexisting  Making a clone in a lab is called cloning, but the process does also occur in nature.  1997 Dolly a cloned sheep was created

3 1. A donor cell is taken from a sheep’s udder. The nucleus of the cell will provide the genetic material for the cloned lamb 2. An egg cell is taken from a second sheep. The nucleus of the cell is removed. This cell does not supply any genetic material for the cloned lamb

4 3. The donor cell (with the nucleus) and the egg cell (without a nucleus) are fused using an electric shock 4. The fused cell begins dividing normally, forming an embryo. The embryo is placed in the uterus of a foster mother 5. The embryo develops normally into a lamb, Dolly. Dolly is a clone of the sheep that donated the udder cell 6. Dolly then went on to have a lamb of her own (the natural way) 7. Not a very reliable way - It took 246 failures before Dolly was created

5  Is Dolly considered a transgenic animal? ◦ No, she does not have any DNA sequences from a different organism

6 1 Carp 2 Cat 3 Cattle 4 Deer 5 Dog 6 Ferret 7 Frog (tadpole) 8 Fruit flies 9 Gaur 10 Goat 11 Horse 12 Mice 13 Mouflon 14 Mule 15 Pig 16 Pyrenean ibex 17 Rabbit 18 Rat 19 Rhesus Monkey 20 Sheep 21 Water Buffalo 22 Wolf


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