A gene is called as the physical and functional unit of heredity. Heredity simply means the inheritance of various characters by offspring from their parents. You resemble your mom or dad right! in certain characteristics and appearance. What is their in our body that regulates this transferring of characteristics? Yes, genes are there. But by the term ‘gene’ what do you mean? How this looks like?
You know about eukaryotic cell. It contains cytoplasm and a nucleus. Inside that nucleus, chromatin fibers are there.
Humans have 20000 to 25000 genes (Human Genome Project – an international Research).
We need an electron microscope to view a gene.
Gene targeting is the changing of a sequence of genes within a genome. The targeting is done at its location. Scients