(1) (26 pts) In lecture we talked about how demographic forces and natural selection can affect...

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Biology

(1) (26 pts) In lecture we talked about how demographic forcesand natural selection can affect patterns of polymorphism (i.e.genetic variation within species).
(a) Describe 2 patterns in genetic variation data (e.g.polymorphism data) that can be caused by balancing selection.
(b) List three ways a bottleneck can affect geneticvariation.
(c) Describe 2 approaches one can use to distinguish bottlenecksfrom selection scenarios at generating the pattern in the data.

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The patterns of polymorphism are seen due to the demographic forces which act on the organism as like the environmental condition which can many times evolve the organism and many times suppress it and also can be extinct due to the demographic forces the organism has found variation in the genome level which can be found in plantlike Arabidopsis thaliana which have high range of growing most of the places of the earth the nucleotide and molecular studies of Athaliana show the sample plants collected by various places showing various changing factor in the genome of that particular plant due to the modifying gene by the demographic forces it can survive in the many places of the earth the natural selection is always act on all the organisms on the planet evolution is the slow process but the key factor of the evolution is the natural selection by this mechanism nature selects the best one by its capacity for existence See Answer

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