Question

The poleward movement of chromosomes and concomitant shortening of kinetochore microtubules is known as _____; the separation of the poles themselves accompanied by elongation of the polar microtubules is known as _____.

Answer 1

During anaphase, chromosomes move to opposite poles due to kinetochore microtubules shortening, while polar microtubules lengthen, separating the cell poles.

Step-by-step explanation:

The process during which chromosomes move toward opposite poles of the cell, with the kinetochore microtubules shortening, is known as anaphase. During this phase of mitosis, the sister chromatids, now individual chromosomes, are pulled toward the centrosomes. The elongation of the cell is facilitated by the lengthening of the non-kinetochore or polar microtubules, which slide against each other and push the poles of the cell apart. This elongation is sometimes informally referred to as 'pole separation.'