Telomeres cap both ends of each chromatid in G2 interphase

Steps:

• Human body cells in interphase (G2 phase) have 46 chromosomes, each consisting of 2 sister chromatids, for a total of 92 chromatids.
• Telomeres are repetitive DNA sequences that protect the ends of linear chromosomes.
• Each chromatid is a linear DNA molecule with two distinct ends.
• Multiply chromatids by telomeres per chromatid: 92 × 2 = 184 telomeres.

Why D is correct:

• Each of the 92 chromatids in G2 interphase has telomeres at both ends, per the definition of telomeres as caps on linear DNA molecules.

Why the others are wrong:

• A: Underestimates by assuming one telomere per chromosome, ignoring two ends and two chromatids per chromosome.
• B: Counts two telomeres per chromosome but overlooks that sister chromatids each have their own two telomeres.
• C: Assumes one telomere per chromatid, but each chromatid requires two for both ends.

Final answer: D