What factors could lead to the rise of a new species?

 

Answer:

Factors that would lead to the rise of a new species are:

  1. Natural Selection
  2. Genetic Drift
  3. Geographical isolation of a population (lack of gene flow)

This can be explained as follows:

Natural selection:

 

  • The variation became a common characteristic due to its survival advantage .
  • This is known as Natural Selection - An adaptation to fit in the environment better.
  • A new species emerged as a result of natural selection.
  • Natural Selection was introduced as a concept by Charles Darwin.

Genetic drift:

 

  • Accidents in small populations can change the frequency of some genes in a population
  • This is known as Genetic Drift .
  • This can result in the emergence of new species.

Geographical isolation:

 

  • Here, a geographical divide (a river) separates the populations .
  • Since the individuals of different populations cannot mate easily, gene flow (movement of genes from one population to another) between them will decrease.
  • The individual population will evolve differently, forming different species .

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CA Maninder Singh is a Chartered Accountant for the past 13 years and a teacher from the past 17 years. He teaches Science, Economics, Accounting and English at Teachoo