Crossing Over and its mechanism

The phenomenon of separation of linked genes is termed as crossing over. Linked genes separate during inheritance and produce new or non-parental combinations in case of incomplete linkage. The parental combinations are more than the non-parental combinations. It is also a physical process of exchange of genetic materials or segments between non-sister chromatids of two … Read more

Darwin’s theory of evolution (Theory of Natural Selection)

It is also known as theory of natural selection. Charles Robert Darwin was (1809- 1882) an English naturalist published his famous book “ The origin of species by natural selection” in 1859. This theory is based on a mass of accurate observations and prolonged experiments. This theory led the whole scientific world to believe in … Read more