Question

question 9
a duplicated chromosome consists of two _______________.
sister chromatids
genomes
centromeres
centrosomes

Explanation:

When a chromosome duplicates, it forms two identical sister chromatids which are held together by a centromere. Genomes are the complete set of an organism's genetic material. Centromeres are the constricted regions that hold sister chromatids together. Centrosomes are organelles involved in cell - division and microtubule organization.

Answer:

sister chromatids