Question

In the hexaploid wheat, the haploid $(n)$ and basic $(X)$ numbers of chromosomes are

• A. n = 21 and x = 21
• B. n = 21 and x = 14
• C. n = 21 and x = 7
• D. n = 1 andx = 21.

Answer 1

Answer: (C)

Hexaploid wheat is a result of allopolyploidy induced by doubling the chromosome number of the hybrid produced by crossing two different plants. In hexaploid wheat triticale 2n = 6x = 42. So jc stands for basic chromosome number and n for haploid chromosome number. So, n = 21 and x = 7 for hexaploid wheat.