Scientists in Scotland produced Dolly the sheep in 1996 using nuclear transfer (adult cell cloning). In this process, which component provides the genetic information in the cloned organism?

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Question

Scientists in Scotland produced Dolly the sheep in 1996 using nuclear transfer (adult cell cloning). In this process, which component provides the genetic information in the cloned organism?

Accepted Answer

The nucleus from an adult body cell — Award 1 mark for recognising that the nucleus from the adult body cell contains all chromosomal DNA that determines the clone's characteristics. B is incorrect because cytoplasm contains very little genetic information (only mitochondrial DNA). C is incorrect because the surrogate mother only carries the embryo; mitochondrial DNA comes from the egg cell donor. D is incorrect because the enucleated egg cell has had its nucleus removed.

Answer

The mitochondria from the surrogate mother

Answer

The egg cell membrane after enucleation

Answer

The cytoplasm from an unfertilised egg cell

Answer

The nucleus from an adult body cell

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