Animal cloning involves inserting the nucleus from a somatic cell of one animal into the
A - HSC - SSCE Biology - Question 7 - 2022 - Paper 1
Question 7
Animal cloning involves inserting the nucleus from a somatic cell of one animal into the
A. plasmid of a bacterium.
B. uterus of a surrogate animal.
C. fertilised eg... show full transcript
Worked Solution & Example Answer:Animal cloning involves inserting the nucleus from a somatic cell of one animal into the
A - HSC - SSCE Biology - Question 7 - 2022 - Paper 1
Step 1
A. plasmid of a bacterium.
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Answer
This option is incorrect because plasmids are small DNA molecules within cells that are physically separated from chromosomal DNA and can replicate independently. They are primarily used in genetic engineering and not involved in animal cloning.
Step 2
B. uterus of a surrogate animal.
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Answer
This option is incorrect because while the uterus of a surrogate animal is involved in the gestation of the cloned embryo, it is not where the nucleus from the somatic cell is inserted.
Step 3
C. fertilised egg from another animal.
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Answer
This option is incorrect for animal cloning. While a fertilized egg is involved, it needs to be enucleated to remove the original nucleus first.
Step 4
D. enucleated egg from another animal.
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Answer
This is the correct answer. In animal cloning, the nucleus from a somatic cell is inserted into an enucleated egg (an egg cell that has had its nucleus removed) from another animal. This process allows the egg to develop into a new organism that is genetically identical to the donor of the somatic nucleus.
