Question

The centromeres move toward the poles in __________ .
A.anaphase
B. interphase
C. metaphase
D. prophase

Answer 1

The centromere moves toward the poles in anaphase.

Explanation:

• The equal forces of the polar fibre pushing on the centromeres keep chromosomes at the metaphase plate during metaphase.
• As daughter chromosomes are pulled centromere first toward opposing ends of the cell during anaphase, paired centromeres in each unique chromosome begin to migrate apart towards the poles.

Answer 2

The centromeres move toward the poles in Anaphase (Option - A)

• Centromeres are the central part of chromosomes where the chromatids are attached.
• It consists of condensed heterochromatin.
• During Metaphase the centrosomes of Animal cells have reached the poles of the cells and start producing spindle fibers that attach to the kinetochores of the chromosome.
• Kinetochores are structures that surround the centromeres of chromosomes.
• During anaphase, the chromosomes are pulled via the centromere towards the poles separating the homologous chromosomes or sister chromatids to each pole
• The centromere face towards the poles whereas the chromatids are wave behind the centromere forming shapes such as V, L, J, and Z shaped depending on the type of chromosome.