Over the last several decades, the scientific community has gathered a large amount of information regarding genetics and genetic variation. what are two main sources that lead to increased genetic variation? (both answers must be selected.) selective breeding gamete mutations recombination genetic drift

The two main sources that lead to increased genetic variation are:

1. Gamete mutations
2. Recombination.

Gamete mutations:
Gametic mutations are the mutations that occur in germline cells (sperm and egg). Due to this, the mutations are able to be passed on from one generation to another. One of the most famous gametic mutations is hemophilia.

Recombination:
Genetic recombination is the production of offspring with combinations of traits that differ from those found in either parent.

The answer is d. when it begins to fall back to the child's hand