Question

Which of the following correctly defines a transgenic animal [CBSE PMT 1995]
A) An animal which has foreign DNA and RNA in some of its cells because of an injection of DNA and RNA into the nucleus of the zygote from which it is developed
B) An animal which has foreign DNA in all its cells because of an injection of DNA into the nucleus of the zygote from which it is developed
C) An animal which has foreign DNA in some of its cells because of an injection of DNA into the nuclei of some of the cells of the blastocyst
D) An animal which has foreign DNA in all its cells because of an injection of DNA into the nuclei of some of the cells in adulthood

Answer 1

The ans is :
B) An animal which has foreign DNA in all its cells because of an injection of DNA into the nucleus of the zygote from which it is developed.


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Answer 2

Answer:

Which of the following correctly defines a transgenic animal [CBSE PMT 1995]:

B) An animal which has foreign DNA in all its cells because of an injection of DNA into the nucleus of the zygote from which it is developed

Explanation:

Transgenic animals are those animals who are created or produced by inserting a foreign DNA with the help of microinjection into the nucleus of the pronuclei of a fertilised egg which is implanted into the oviduct of a pseudopregnant surrogate mother or you can say the foreign DNA is inserted into the embryo present inside the surrogate mother to produce an individual with improved genetic characteristics.

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