In normal tap water, an egg will sink because it's density is greater than the density of water. But, when salt is added to the water, it's density becomes greater than the egg's density. The term used to describe this is "buoyancy."
Genes they assort independently if they follow the 9: 3: 3: 1 rule resulting from a dihybrid cross. It shows that the genes are not on the same chromosome and they are not included.
