Branching descent and natural selection are the two key concepts of Darwinian Theory of Evolution. Explain each concept with the help of a suitable example

Two key concepts of Darwinian theory of evolution are

The two key concepts of Darwinian theory of evolution are

Which of the following are the two key concepts of Darwinian theory of evolution?

A. The conditions primitive on earth (before the origin of life) were : low temperature, volcanic storms, reducing atmosphere containing Ch_(4),NH_(3) , etc. B. Cheetah and humans share similarities in the pattern of bones of forelimbs. C. In a collection of moths made in the 1850s i.e., before industrialization set in, it was observed that there were more dark-winged moths on trees than white-winged moths. D. Branching descent and natural selection are the two key concepts of Darwinian theory of evolution. E. The Neanderthal man with a brain size of 1400 cc lived in east and central Asia 25,000-10,000 years age. Which set of given statements are correct ?

Explain polygenic inheritance with the help of a suitable example.

Explain polygenic inheritance with the help of a suitable example.

Assertion :- Branching descent and Natural selection are the two key concepts of Darwinian theory of evolution. Reason :- Darwinism is able to explain the presence of vestigeal organ.

Explain geometrical isomerism with the help of suitable example.

Key concepts on which Darwinian theory of evolution is based are

Explain chemical energy with the help of two examples.