EMBRYOLOGY
CHROMOSOMES AND CELL DIVISIONS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Which of these cannot be attributed to Prophase?
|
|
Chromosomes get duplicated
|
|
|
Nucleus and nucleolus disappear
|
|
|
Centrioles occupy opposite poles of the cell
|
|
|
Spindle fibers appear
|
|
|
Chromosomes get attached to the spindle fibers via centromere
|
Explanation:
Detailed explanation-1: -The spindle fibers from the other side of the cell attach to the other sister chromatids in the chromosome. They attach at a point called the kinetochore, which is a disk or protein that is on each side of the centromere. The spindle fibers will move the chromosomes until they are lined up at the spindle equator.
Detailed explanation-2: -Centromere The centromere appears as a constricted region of a chromosome and plays a key role in helping the cell divide up its DNA during division (mitosis and meiosis). Specifically, it is the region where the cell’s spindle fibers attach.
There is 1 question to complete.