Neo Darwinism explains the raw material of evolution as arising from
Correct answer: A. mutation and genetic recombination
- A. mutation and genetic recombination
- B. use and disuse of organs
- C. the needs felt by the organism
- D. the direct action of the environment on the gametes
Explanation
The modern synthesis keeps Darwin's natural selection and adds genetics: mutation creates new alleles and sexual reproduction shuffles them by recombination, producing the variation selection acts on. Selection then changes allele frequencies in the population, which is what evolution now formally means. Use and disuse and organism felt need are Lamarckian ideas that the synthesis explicitly excludes.
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About Darwinism
Darwinism explains evolution through inherited variation, competition for limited resources, survival and reproduction of better-adapted organisms, and natural selection over generations. It is distinguished from Lamarckism because Darwin's explanation depends on selection acting on existing heritable differences, not the inheritance of acquired characteristics.
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