gs1hard

Consider the following statements:

  1. 1.Genetic changes can be introduced in the cells that produce eggs or sperms of a prospective parent.
  2. 2.A person’s genome can be edited before birth at the early embryonic stage.
  3. 3.Human induced pluripotent stem cells can be injected into the embryo of a pig. Which of the statements given above is/are correct?
  1. A.1 only
  2. B.2 and 3 only
  3. C.2 only
  4. D.1, 2 and 3
▶ Answer & Explanation

Correct answer: D. 1, 2 and 3

Germline gene editing (statement 1) refers to modifications made to sperm, eggs, or embryos that are heritable. Genome editing before birth in early embryonic stages (statement 2), often referred to as prenatal gene editing, is technically feasible. The creation of human-animal chimeras, where human stem cells are integrated into an animal embryo (statement 3), is an active area of research, with the potential to grow human organs in animals.

Source: UPSC gs1 2020

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