Question

which of the following could be found in a normal somatic (body cell) of a diploid organism?
12 chromosomes
15 chromosomes
13 chromosomes
any one of these could be found in a somatic cell of a diploid organism.

Explanation:

In a diploid organism, somatic cells have a diploid number of chromosomes. The diploid number is an even number as it is composed of two sets of chromosomes (one from each parent). 12 is an even number, while 13 and 15 are odd numbers. So only 12 chromosomes could be a diploid number.

Answer:

12 chromosomes