Genetics is the study of patterns of inheritance and dates back to Mendel. http://en.wikipedia.org/wiki/Gregor_Mendel
Molecular genetics is DNA/RNA etc..
If I'm not mistaken genetic drift is the random change in the genome of a population over time. This being said it would be possible that this random changing could eventually remove certain...
1) No mutations 2) No natural selection 3) No individuals in or out of a population. 4) Large population 5) Random mating It is, however, impossible for a population to achieve genetic equilibrium....
if a man has blonde hair and both of his parents have black hair,he marries a woman with blonde hair,her father has blonde hair and her mother has black,they have a child that has blonde hair