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RRB Junior Engineer / DMS / CMA 2019 · Question 3612 of 3719

Genetic variation between distinct populations of the same species is known as

  1. AGenetic diversityCorrect
  2. BBio diversity
  3. CEcosystem diversity
  4. DSpecies diversity

Answer: A. Genetic diversity

Explanation

The correct answer is Genetic diversity. Genetic variation between distinct populations of the same species is known as Genetic diversity. Key Points Genetic diversity: Genetic diversity is the total number of genetic characteristics in the genetic makeup of a species. A single species might show high diversity at the genetic level . India has more than 50,000 genetically different strains of rice and 1,000 varieties of mango and many more. Genetic diversity allows species to adapt to changing environments. Species that differ from one another in their genetic makeup do not interbreed in nature. Closely-related species have in common much of their hereditary characteristics. Additional Information Biodiversity: Biodiversity means the variability among living organisms from all sources and the ecological complexes of which they are part and includes diversity within species or between species and ecosystems. Ecosystem diversity: This is the number of species in a community of organisms. Maintaining both types of diversity is fundamental to the functioning of ecosystems and hence to human welfare. Species diversity: This refers to the variety of species within a particular region. The number of species in a region is a measure for such diversity. The richness of species in a given region provides a yard stick for species diversity.

Source: RRB JE 2019 (CBT 2) (IT) Previous Year Paper (30 Aug 2019) — prepp.in solved-paper PDF (answer key with explanations) · reliable-secondary

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