Question
Biology Question on Principles of Inheritance and Variation
Reason of fast speciation in present day crop plants is
A
Mutation
B
Isolation
C
Polyploidy
D
Sexual Reproduction
Answer
Polyploidy
Explanation
Solution
The correct option is (C) : Polyploidy
A typically diploid cell or organism becomes polyploid when it picks up one or more extra sets of chromosomes. A population of plants may have many individuals with the same polyploidy number. In contrast to the original plants or any other plants, they may thereafter only reproduce with one another. They therefore separate physiologically from the original group of plants and are regarded as a new species. It takes place without any geographical separation since it is a sort of sympatric speciation.