What are genes and what role do they play?
Genes control the expression of (genetic) traits and are responsible for determining the inherited characters, they are therefore called units of inheritance.
Genes are the basic unit of genetic inheritance. Chromosomes are the structures inside cells that contain the entire genome. Naturally, genes and the chromosomes that contain them, and how genes arrange themselves on the daughter chromosomes during meiosis are critical to the process of determining the heredity of the offspring.
Natural Selection has a role in the changing population because the stongest genes stay and the weakest genes become extint (because the person has died) and so in conclusion that means that more and more people with the strongest genes will reproduce and the off spring will have the stronger gene. Meaning the population may not change in appearance but will change inside their bodies and become stronger.
Genes play a role everything we are, from our looks and skills to our brains and personality. Deciphering a gene means to understand that gene's role in our development. For instance people who suffer from sickle-cell anemia have differently shaped blood cells. When scientists isolated the genes responsible for constructing the specific blood cells affected by this type of anemia they claimed to have deciphered the genes responsible for sickle-cell anemia. Now everyone can be…