Question

the point of constriction on chromosomes that contains certain repeated dna sequences that bind specific proteins is called:
multiple choice
the centrosome
the cohesin complex
the centriole
the kinetochore
the centromere

Explanation:

The question describes a chromosomal constriction with repeated DNA sequences binding specific proteins. The centromere is the region on a chromosome where sister chromatids are joined, containing repetitive DNA that binds kinetochore proteins. Other options: centrosome/centriole are cell structures for spindle formation; cohesin holds chromatids together; kinetochore is a protein structure at the centromere, not the DNA-containing constriction itself.

Answer:

The centromere