. In which one of the following combinations (a-d) of the number of the chromosomes is the present day hexaploid wheat correctly represented


number of chromosome

Best Answer

Answer: D

Solution : The basic chromosome number of wheat is 7(x=7) and it’s hexaploid species contains 42(6×7) chromosomes. Thus, it’s monosomic (one chromosome missing) contains 41(42-1) chromosomes. Haploid contains (half to the 42) chromosomes. Nullisomic (one chromosome pair missing) contains 40(42-2) chromosomes and trisomic contain (one chromosome extra) 43 (42_1) chromosomes.

 

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