Question

Fitness according to Darwin refers to __________
A) Number of species in a community
B) Useful variation in population
C) Strength of an individual
D) Reproductive fitness of an organism

Answer 1

Hint: The theory of evolution by natural selection, first formed in Darwin's book "On the Origin of Species" in 1859, is the method by which individuals improve over time as a determination of differences in heritable material or behavioural characteristics.

Complete answer:
Before we discuss the correct option, let us know a little more about Darwin’s theory.Darwin is remembered as the father of evolution. In truth, Darwin reached his theory of evolution at the same moment different scientist, Alfred Russell Wallace, developed the same result. Darwin's views found their move out of the objective world and into the marketing world and even civilisation itself. In many senses, Darwin's theories formed a societal alteration.

Option D: According to Darwin's theory fitness leads to the Reproductive fitness of an individual because it represents the generative completion of a person which is ranked as the number of seeds provided by a self concerning a particular genotype or phenotype. Fitness theory of Darwin doesn't depend on the power of an individual to survive but instead it depends on the capacity of an individual to carry on its genetic material to its child. Therefore this is the correct option.

As option (D) is the correct answer, therefore option A, B and C is an incorrect option.

Darwin's theory consisted of two principal points;
 1) different groups of mammals develop from one or a few general ancestors
 2) the mechanism by which this development takes place is natural selection.

Hence the correct answer is option ‘D’.

Note:Darwin's theory of evolution, also described Darwinism, can be classified into 5 sections: "evolution as such", mutual descent, gradualism, community speciation, and natural selection.