Bacteria, tree, algae, corn, and grass.
Heredity.
It helps explain why children tend to resemble their parents, as well as how a genetic disease runs in a family, although some genetic conditions are caused by mutations in a single gene.
Gold and silver is correct as the Spanish were the ones who conquered the Inca empire if I am remembering that correctly but definitely A
CRISPR is a technology that can be used to edit genes and, as such, will likely change the world.