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Aliun [14]
3 years ago
13

According to Darwin's theory of evolution, how do new species evolve?

Biology
1 answer:
Vikki [24]3 years ago
8 0

Answer:

According to Darwin's theory of evolution, new species evolved as a result of natural selection.

Explanation:

  • Darwin proposed that speciation could readily occur through the prolonged action of Natural selection.
  • Natural selection allows the 'survival of the fittest' i.e. a more fit organism will have a better chance of survival than the less fit one.
  • The result of Natural selection could be positive,negative or balancing.
  • Evolutionary process in which the genetic changes confer a higher fitness to increase frequency of the organism over time in population is called positive selection.
  • Evolutionary process in which genetic changes decreases the organism's fitness resulting in its disappearance from the population is called Negative selection.
  • It may happen that a mutation benefits hetero-zygotes but not homo-zygotes and alleles maintain a intermediate frequency in population.This evolutionary process is called balancing selection.
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