Question

state the difference between centrosome and centromere

Answer 1

Acrocentric – with p-arms significantly shorter than the q-arms;Submetacentric – with similar (but not equal) p and q-arms;Metacentric – with identical p and q-arms (the centromere is located exactly in the middle of the chromatids).

Difference Between Centrosome and Centromere

1.   Definition Of Centrosome and Centromere

Centrosome: The centrosome is a cell organelle in the eukaryotic animal cells, acting as a center for the organization of the microtubules.

Centromere: The centromere is a constricted region of the chromosome where the two identical sister chromatids are connected.

2.   Function of Centrosome and Centromere

Centrosome: The centrosome is the main center for microtubule organization and regulator of the progression of the cell-cycle.

Centromere: The centromere determines the formation of the kinetochore – complex structure where the spindle fibers attach to pull the two sister chromatids apart during mitosis.

3.   Occurrence of  Centrosome and Centromere

Centrosome: The centrosome exists only in animal eukaryote cells.

Centromere: The centromere exists in all eukaryotes.

4.   Number of Centrosome and Centromere

Centrosome: The centrosome duplicates once per cell cycle, during the S-phase. Each daughter cell receives one centrosome.

Centromere: There is one centromere in each linear monocentric chromosome.

5.   Composition of Centrosome and Centromere

Centrosome: The centrosome is built from, centrin, tektin, cenexin, and microtubules.

Centromere: The centromere is built from double-stranded DNA (heterochromatin).

Answer 2

A centromere is part of the region on the chromosome that links the two sister chromatids together. While centrosomes are made up of two or more centromere