The point of constriction on chromosomes that contains certain repeated DNA sequences that bind specific proteins is called:
A. The kinetochore
B. The centromere
C. The cohesin complex
D. The centriole
E. The centrosome
B. The centromere
The centromere is the point of constriction on the chromosome that contains repeated DNA sequences that bind specific proteins. The proteins that bind at the centromere are referred to as the kinetochore. The cohesin complex keeps the sister chromatids attached at the centromere, but the cohesin complex is a protein complex, and does not contain repeated DNA sequences. The centrosome is a microtubule organizing center that contains a pair of centrioles. These are not part of chromosomes.
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