The Circle near the Center of the Replicated Chromosome Below

Question

The circle near the center of the replicated chromosome below represents a 
A) chromatid. 
B) centromere. 
C) centriole. 
D) homologous chromosome.

Accepted Answer

The circle represents the centromere, which is the region that holds together sister chromatids and is essential for proper segregation of chromosomes during cell division.