Question

Mention the factors which could lead to the rise of a new species

Answer 1

1. mutation : A mutation is a permanent change in the DNA sequence of a gene. Mutations in a gene's DNA sequence can alter the amino acid sequence of the protein encoded by the gene.
2.genetic drift : Genetic drift or allelic drift is the change in the frequency of a gene variant (allele) in a population due to random sampling.
geographical 3.isolation : A population that becomes divided (isolated) by a physical barrier, allowing each of the separated groups an independent evolutionary path.
4.natural selction : The process whereby organisms better adapted to their environment tend to survive and produce more offspring.
5.migration :the movement of persons from one country or locality to another.


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Answer 2

|$\large\mathrm\orange{Factors}$|→

(a) Natural activity.

(b) Method of genetic drift.

(c) Mutation.

(d) Geographical isolation.

(e) Environmental factors on the isolated populations.

(f) Generative isolation for a protracted time.

(g) Quantum of genetic variant transmissible from one generation to the following generation.