Question

Which steps were included in the process of cloning Dolly? Check all the apply.

A cell from the udder of a sheep was removed.
Developing cells were placed in another sheep.
Organisms with desirable traits were crossed.
The DNA from the egg of a sheep was removed.
The DNA from the udder cell was added to an egg cell.

Answer 1

•cell from the udder of a sheep was removed

•The DNA from the udder cell was added to an egg cell

In 1996, Ian Wilmut and his colleagues at the Roslin­ Institute in Edinburgh, Scotland, successfully cloned a sheep named Dolly.

•Scientists used an udder cell from a six-year-old Finn Dorset white sheep.

•Then they injected the cell into an unfertilised egg cell (which was taken from a scottish blackface ewe),had its nucleus removed, and made the cells fuse by using electrical pulses.

•The scientists cultured the fused cells for six or seven days to see if it divided and developed normally, before implanting it into a surrogate mother, another Scottish Blackface ewe.

•The implantation was successful and dolly was cloned successfully.

Answer 2

a b d e are your answers

Step-by-step explanation:

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