The number of linkage group(s) of pea is/are:

One

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Two

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Four

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Seven

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Solution

The correct option is D Seven
All the genes present at different loci on a single chromosome form one linkage group. These are inherited together as a unit from parents to offspring. Linkage group is equal to the total number of different chromosomes, or total number of haploid sets of chromosomes.
Pea plant is a diploid plant and has 7 pairs of chromosomes. Haploid number of chromosomes would be 7. Therefore, pea plants have 7 linkage groups.

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