Gametes are sex cells (aka sperm and eggs), which contain the traits and alleles like Aa or aa. These traits are randomly selected from each parent to create a new individual, with the dominant trait having a greater percentage of showing up and recessive trait having a lower percentage. Hope this helped! :)
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface.
