The wheat that we commonly eat is hexaploid, derived from a cross between two distinct species, one a diploid and one a tetraploid.This is an example of
A) reinforcement.
B) the Dobzhansky-Muller model.
C) autopolyploidy.
D) allopolyploidy.
E) adaptive polyploidy.

Question

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This is an example of allopolyploidy, where two different species with different diploid chromosome numbers hybridize to form a new species with a higher chromosome number. In this case, the hexaploid wheat is derived from a cross between two distinct species, one diploid and one tetraploid. Reinforcement is a process of natural selection that strengthens prezygotic barriers between populations, while the Dobzhansky-Muller model explains how genetic incompatibilities can arise between populations as a result of divergent evolution. Autopolyploidy occurs when an organism has more than two sets of chromosomes from the same species, while adaptive polyploidy refers to the phenomenon of polyploidization providing a selective advantage in certain environments.

The Wheat That We Commonly Eat Is Hexaploid, Derived from a Cross