Question

Given: $1$ =Natural selection; $2$ = Variations and their inheritance; $3$ = Survival of the fittest; $4$ = Struggle for existence.
According to Darwinism, which of the following represents the correct sequence of events in the origin of new species?
(A) $3,4,1,2$
(B) $2,3,1,4$
(3) $1,2,3,4$
(D) $4,2,3,1$

Answer 1

Hint: Charles Darwin is the British scientist who gave his idea in the field of evolution. He has given the clear-cut idea in the stages of the origin of species. It includes struggle for existence, survival of fittest, natural selection and variation.

Complete answer:
The given data are
$1$ =Natural selection;
$2$ = Variations and their inheritance;
$3$ = Survival of the fittest;
$4$ = Struggle for existence.

1.Natural selection:
He gave an idea about the natural selection as the differential reproduction and the survival of the organisms due to their change in the phenotype. This natural selection has the key role in evolution, by changing the inheritable traits of the organisms. As indicated by Darwinism, the right succession of occasions in the source of species: Struggle for existence, variations and their inheritance, survival of the fittest and natural selection.

2.Variation and their inheritance:
Darwin also said that variation is the differences in the characteristics of the individual organism of the certain species from one self to the other. This term is used in the field of genetics. Darwin identified that variation has no limit.

3.Survival of the fittest:
Darwin says that the organisms that are fit enough to face the environment condition than the other organism only can survive. They reproduce good quality individuals in the successive generations.

4.Struggle for existence:
Darwin said that in nature there will always be struggle for the living in which the fittest organisms survive than the non-fittest one.

Hence, the correct answer is option (D)

Note: Charles Darwin was the naturalist, biologist and the geologist and he was famously known for his findings in the science of evolution. He did a lot of research in the field of genetics. He is credited as he found the theory of natural selection.