Question

which describes the chromosome set of a polyploid organism? a) 3n b) trisomy c) n d) 2n

Explanation:

To determine the correct answer, we analyze each option:

• Option A: A polyploid organism has more than two complete sets of chromosomes. \(3n\) (triploid, a type of polyploidy) fits as it represents three sets of chromosomes.
• Option B: Trisomy is the presence of an extra single chromosome (e.g., trisomy 21 in humans), not multiple complete sets, so it's not polyploidy.
• Option C: \(n\) is the haploid number (one set of chromosomes), not polyploid.
• Option D: \(2n\) is diploid (two sets of chromosomes), which is the normal state for most organisms, not polyploid.

Answer:

A) \(3n\)