science
Grade-10
Easy

Question

What is the name of part 1 in the given image?

  1. Sister chromatids
  2. Chromatids
  3. Telomere
  4. Centromere

Hint:

The constricted portion of a chromosome where spindle fibers attach during cell division.

The correct answer is: Centromere


    • Centromere is the constricted portion of a chromosome
    • Sister chromatids formed during cell division are attached to one another at centromere
    • During cell division, the spindle fibers attach to the centromere and contract causing the sister chromatids to separate
    • Based on the position of centromere, the chromosomes can be divided into metacentric, acrocentric, submetacentric and telocentric
    • The part attached to the centromere are called the arm(s) of a chromosome

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