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Question

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


A
n=21 and x=21
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B
n=21 and x=14
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C
n=21 and x=7
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D
n=7 and x=21
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Solution

The correct option is B $$n=21$$ and $$x=7$$
Ploidy level is the number of complete sets of chromosomes in a cell. Wheat is hexaploid which is denoted as 6x and has 42 chromosomes, here ' x'  is the basic number of chromosomes, they are the different chromosomes which makes up a single complete set of chromosomes which is 7 in case of wheat while ' n ' is referred to as the haploid number of chromosomes i.e; half the total number of chromosomes which is 21 in wheat .
So , correct option is ' n = 21 and x = 7 ' .

Biology

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