GENETICS

Genetics is the branch of biology that studies heredity and variation in organisms.To be more precise it is the science of genes,heredity,and variation in living organisms.Genes correspond to regions within DNA, a molecule composed of a chain of four different types of nucleotides, the sequence of these nucleotides is the genetic information organisms inherit.Although genetics plays a large role in the appearance and behavior of organisms, it is the combination of genetics with what an organism experiences that determines the ultimate outcome.A change to the DNA in a gene can change a protein's amino acids, changing its shape and function: this can have a dramatic effect in the cell and on the organism as a whole.Genetics is one subject which one has to definitely explore in the lifetime.