Question

According to Darwin, evolution is
A. A sudden but discontinuous process
B. A slow, gradual and continuous process
C. A slow, sudden and discontinuous process
D. A slow and discontinuous process

Answer 1

Hint: Charles Robert Darwin, was an English naturalist and biologist, whose scientific theory that all species of life have descended over time from common ancestors is now widely accepted and has become the fundamental of modern evolutionary research by natural selection. He is also called as “Father of evolution”.

Complete answer:
Evolution brings a remarkable change in a living organism's physiology, anatomy, and genetics that allows them to respond to the environment in a better way and coordinate with the fluctuating environments over time. This change creates variation in every further generation and therefore it is said to a slow and steady process. The theory of evolution by Darwin argued that all life is related to one another and is derived from a common ancestor. The fish and the flowers, the birds, and the bananas, all are related in one way or another. The general theory of Darwin presumes the evolution of life from non-living and emphases a purely naturalistic "descent with modification," i.e., complex organisms evolve from more simplistic ancestors naturally over time. In a nutshell, when random genetic variations exist within the genetic code of an organism, the beneficial mutation is retained because they aid the survival process known as " Natural selection ". In next-generation, these beneficial mutations will carry on. With time, beneficial mutations accumulate and as a result, a completely new organism will form. Darwin's 'Evolution Theory’ is a slow and gradual process. In Darwin’s studies, it is said that natural selection only works by taking advantage of minor successive variations. It can never take a major and fast leap, but in gradual steps, it must continue rapidly and surely. So, according to Darwin, evolution is a slow, gradual, and continuous process of evolution.
So, the correct answer is “Option B”.

Note:
Variation aids in organism survival under changed environmental circumstances. Variations within species allow them to adapt to and give them a chance of surviving in that unique climate. The one who is fit to face the changing environmental conditions survives while the weak one dies.