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What Is Reproductive Cloning, and Has It Ever Been Shown

Question 35

Multiple Choice

What is reproductive cloning, and has it ever been shown to work?

A) A nucleus from a parent cell is placed into an egg with the nucleus removed. The resulting embryo is implanted into a surrogate mother and is identical to the parent. No, this has never resulted in a live birth.
B) A nucleus from a parent cell is placed into an egg with the nucleus removed. The resulting embryo is implanted into a surrogate mother and is identical to the parent. Yes, this has been done with a variety of animals.
C) A nucleus from a parent cell is placed into an egg with the nucleus removed. The resulting embryo is grown up in the lab and is identical to the parent. No, this has never resulted in a live birth.
D) A nucleus from a parent cell is placed into an egg with the nucleus removed. The resulting embryo is grown up in the lab and is identical to the parent. Yes, this has been done with a variety of animals.
E) DNA from any individual can be cultured into an organism that exactly matches the original parental source of the DNA. People are increasingly doing this with valuable animals and pets.

Correct Answer: