Question

In an organism, if the number of linkage groups is 12, then the number of chromosomes in the diploid set of that organism is

• A. 12
• B. 24
• C. 6
• D. 48

Answer 1

The correct option is B 24

Linkage group refers to all the genes that are present on a single chromosome, and tend to inherit together in a group rather than assorting independently.
Ideally, the number of linkage groups = haploid number of chromosomes
In the question, number of linkage groups = 12
Therefore, the number of haploid (n) chromosomes = 12
The diploid number of chromosomes = 2n
= $2\times 12$
= 24