Biology
Grade-9
Easy
Question
In a human cell, each chromosome possesses two identical _______
- Chromatids
- Genes
- Centromere
- Nuclei
Hint:
Chromatids
The correct answer is: Chromatids
The two copies of a chromosome are called sister chromatids. The sister chromatids are identical to one another and are attached to each other by proteins called cohesins. The attachment between sister chromatids is tightest at the centromere, a region of DNA that is important for their separation during later stages of cell division.
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