NCERT Solution for Class 10 Science Chapter 9
Heredity and Evolution
NCERT Books for Session 2022-2023
CBSE Board and UP Board
Exercises Questions
Page No-151
Questions No-3
Will geographical isolation be a major factor in the speciation of an organism that reproduces asexually? Why or why not?
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In asexually reproducing organism, geographical isolation will not be a factor in speciation as it does not require another individual for reproduction. Only one individual is capable of producing next progeny hence geographical isolation will not act barrier.
In case of an asexually reproducing organism, geographical isolation cannot be a major factory in speciation because meiosis does not take place during asexual reproduction.
Geographical isolation prevents gene flow between populations of a species whereas
asexual reproduction generally involves only one individual. In an asexually reproducing
organism, variations can occur only when the copying of DNA is not accurate. Therefore,
geographical isolation cannot prevent the formation of new species in an asexually
reproducing organism.
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