Question

Trisomy has chromosome complement of

• A. $2n-1$
• B. $2n-1-1$
• C. $2n+1+1$
• D. $2n+1$

Answer 1

The correct option is D $2n+1$

A trisomy is a type of polysomy (condition found in many species, including fungi, plants, insects, and mammals, in which an organism has at least one more chromosome than normal) in which there are three instances of a particular chromosome, instead of the normal two.

The number of chromosomes in the cell where trisomy occurs is represented as 2n+1.

So, the correct answer is '2n+1'