AP BIOLOGY

CELL DIVISION

THE CELL CYCLE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
I am the center of the chromosome (the button) that holds the sister chromatids together
A
chromosome
B
centromere
C
spindle
D
centriole
Explanation: 

Detailed explanation-1: -The two “sister” chromatids are joined at a constricted region of the chromosome called the centromere. During cell division, spindle fibers attach to the centromere and pull each of the sister chromatids to opposite sides of the cell.

Detailed explanation-2: -Cohesin forms rings that hold the sister chromatids together, whereas condensin forms rings that coil the chromosomes into highly compact forms.

Detailed explanation-3: -After DNA is replicated each chromosome consists of paired sister chromatids held together by cohesin.

Detailed explanation-4: -Centromere is a primary constriction present on the chromosome where the chromatids are held together.

There is 1 question to complete.