Consider the following statements regarding recent advances in human reproductive and genetic technology:

1. Techniques now exist to genetically modify the gametes (germline cells) that a person passes on to their offspring.

2. CRISPR based gene editing tools have been used to edit the genome of a human embryo.

3. Human induced pluripotent stem cells have been injected into a pig embryo to create a human animal chimera for research.

Which of the statements given above are correct?