Moderate

In the hexaploid wheat, the haploid (n) and basic (x) numbers of chromosomes are:

Correct answer: C. n = 21 and x = 7

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

Explanation

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 x stands for basic chromosome number and n for haploid chromosome number. So, n = 21 and x = 7 for hexaploid wheat.

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