Question

After replication, sister chromatids are bound together at a point of constriction containing specific repeated DNA sequences. The protein that binds the two chromatids together is called cohesin. What is the name of this region of the chromosome where this occurs, which is found near the middle of every chromosome?

Answer 1

The region of the chromosome where sister chromatids are bound together by cohesin proteins after replication is called the centromere, which is a constricted and highly condensed area.

Step-by-step explanation:

The region of the chromosome where sister chromatids are bound together after replication is called the centromere. It is found near the middle of every chromosome. The protein that binds the sister chromatids together is called cohesin. During DNA replication in the S phase of interphase, each chromosome duplicates to form two identical copies called sister chromatids. These sister chromatids are held together at a specific region known as the centromere. The centromere is an area of constriction where specific repeated DNA sequences are found, and it is the point at which the cohesin proteins bind the chromatids together. This region is highly condensed and appears as the constricted area in chromosomes when viewed under a light microscope. The centromeric region is crucial for the correct segregation of sister chromatids during cell division.