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?

1. A

   1 only

   1 only. Embryonic editing and pig-embryo iPSC chimeras were also already shown in labs.

2. B

   2 and 3 only

   2 and 3 only. Germ-line (egg/sperm) editing is also possible in principle/practice as keyed.

3. C

   2 only

   2 only. Under-counts.

4. D

   1, 2 and 3

   All three. Germ-line edits, early-embryo genome editing, and human iPSCs into a pig embryo — all reported as technically done.

Summary. Official key is (d) 1, 2 and 3. By 2020, labs could edit prospective parents’ germ cells, edit early human embryos, and inject human iPSCs into pig embryos. All three statements hold as capability claims.