Speciation
Explain the following :
- Speciation
- Natural Selection
Answer
- Speciation - evolution of a new species from pre-existing species
- Occurring due to accumulation of variations
- By processes like genetic drift / geographical barriers like mountains, rivers etc., leading to incapability to reproduce amongst themselves in the population.
Natural selection
- Change in frequency of some genes in a population
- Which give survival advantage to a species from elimination.
- Ex. – in a population of beetles, a new variation (green colour) get survival benefit / advantage to green beetles whereas other (red) perishes.
- Exam Year: 2015
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