Describe the three different ways in which the natural selection opera

1.	Describe the three different ways in which the natural selection operates in nature with regard to organic evolution.
Answer» Natural selection: Heritable variations that enable survival of the fittest will leave greater number of progeny. Natural selection can have following three effects: a. Stabilisation: Larger number of individuals acquire mean character value so peak gets higher and narrower. b. Directional change: Large number of individuals acquire value other than mean character value so peak shifts in one direction. c. Disruption: Large number of individuals acquire peripheral character values at both ends of the distribution curve and hence 2 peaks are formed.

Describe the three different ways in which the natural selection operates in nature with regard to organic evolution.

Answer»

Natural selection: Heritable variations that enable survival of the fittest will leave greater number of progeny. Natural selection can have following three effects:

a. Stabilisation: Larger number of individuals acquire mean character value so peak gets higher and narrower.

b. Directional change: Large number of individuals acquire value other than mean character value so peak shifts in one direction.

c. Disruption: Large number of individuals acquire peripheral character values at both ends of the distribution curve and hence 2 peaks are formed.

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