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Question

Consider the following statements:

1. Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent.
2. A person’s genome can be edited before birth at the early embryonic stage.
3. Human induced pluripotent stem cells can be injected into the embryo of a pig.

Which of the statements given above is / are correct?

(a) 1 only
(b) 2 and 3 only
(c) 2 only
(d) 1, 2 and 3

Answer:

D

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Explanation:

1. This statement is correct. It is possible to introduce genetic modifications, such as gene editing, in the cells responsible for producing eggs or sperm. This allows for the potential alteration of inherited genetic traits in future generations.

2. This statement is correct. Through a technique called embryo editing or germline editing, it is possible to modify the genome of an individual at an early embryonic stage. This enables the alteration of genetic characteristics that will be passed down to subsequent generations.

3. This statement is correct. Human induced pluripotent stem cells (iPSCs) possess the ability to differentiate into various cell types. Researchers can inject these cells into pig embryos, leading to the development of embryos containing a mixture of human and pig cells. This method is utilized in scientific research to study human development and explore potential therapeutic applications.

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