Consider the following statements relating to evolution and answer the question.

(i) Organisms are products of a history of descent with modification.
(ii) Characteristics acquired by an organism during its lifetime are inherited by its offspring.
(iii) The goal of evolution is to adapt organisms to the environment.
(iv) Evolutionary change is brought about by natural selection.

Darwinism explains all of the following except

Within each species, there are variations.

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Organisms tend to produce more number of offsprings than can survive.

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Offspring with better traits that overcome competition are best suited for the environment.

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Variations are inherited from parents to offsprings through genes.

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Solution

The correct option is D Variations are inherited from parents to offsprings through genes.
Evolution brings a remarkable change in the morphology, anatomy and genetics of a living organisms which helps them to adjust in a better manner in the environment and coordinate with the fluctuating conditions with time. This change creates variations generation after generation. Darwinism is a theory of biological evolution developed by Charles Darwin and others, stating that all species of organisms arise and develop through the natural selection of small, inherited variations that increase the individual's ability to compete, survive, and reproduce. Variations are inherited from parents to offspring through genes is best explained by Lamarckism.
Therefore, the correct answer is option D.

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Similar questions

Consider the following statements relating to evolution and answer the question.

(i) Organisms are products of a history of descent with modification.
(ii) Characteristics acquired by an organism during its lifetime are inherited by its offspring.
(iii) The goal of evolution is to adapt organisms to the environment.
(iv) Evolutionary change is brought about by natural selection.

The theory of evolution presented in Darwin's "The Origin of Species" depended on what combination of these statements?

Which combination of the above statements best reflects Lamarck's theory of evolution?

The process by which variations enabling better survival are inherited, so that, an organism can reproduce and leave a greater number of offsprings is called:

Q. Which of the following statements about natural selection are correct?
(i) Natural selection tends to increase the characters that enhance survival and reproduction.
(ii) Individuals with better adaptive ability will produce more progeny.
(iii) Was considered as a mechanism of evolution by Darwin.

Complete the following sentences by choosing the appropriate words from the brackets.

(Inheritance, sexual reproduction, asexual reproduction, chromosomes, DNA, RNA, gene)

a. Hereditary characters are transferred from parents to offsprings by ............, hence they are said to be structural and functional units of heredity.

b. Organisms produced by ............ show minor variations.

c. The component which is in the nuclei of cells and carries the hereditary characteristics is called .............

d. Chromosomes are mainly made up of .............

e. Organisms produced through ............ show major variations.

Q. Assertion :As favourable variations are transmitted from generation to generation, successive generations become better adapted to the environment, more over, new adaptations may arise due to changing environment. In this way, the adaptive traits preserved by natural selection, will gradually change the characteristics of a species. Reason: This explains the origin of species.

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