Answer to Question #174545 in Microbiology for Aliya

Question #174545

1.     Speciation is the formation of a new species. Answer the following questions.


a.     What two factors are necessary to produce a new species? (2 marks)



-         Isolation

-         Genetic divergence 

is this correct? will upload question b cant upload it with this post sorry

Expert's answer

Yes those are the answers

Speciation can be caused by the following factors;

1.     Geographic isolation which can be caused by physical barriers such as mountains, sea and oceans, this form of isolation leads to reproductive isolation and the flow of genes between the isolated groups is cut.

2.     Genetic drift also causes speciation by causing drastic change in the expression of particular genes which occurs randomly.

3.     Natural selection also causes speciation by the environment favoring a specific group within the habitat.

4.     The genetic mutation also leads to speciation by drastic changes in the DNA leading to the formation of a new genome.

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