Question

Brancing descent and natural selection are the two key concepts of Darwinian theory of evolution explain each concept with the help of suitable example

Answer 1

Dear student, Natural selection is a process in which better adapter organisms or traits leads to better adaptation and survival while less adapted organisms get eliminated at successive stages. Selected organisms reproduce and produce stable population to sustain the changes. E.g.peppered moth of England grew in no. because of the natural selection of the peppered moth. Branching descent is the process of development of a new species from a single common descendant. New species developed became geographically adapted to a new environment. This results in reproductive isolation and later to the development of a new species. E.g Darwinian finches . Regards.