A centromere joins the two sister chromatids together at the same specific loci on each chromatid until the sister chromatids are separated during anaphase.
How are centromere and chromatid related quizlet?
Before cell division, chromosomes are replicated, so that each chromosome consists of two identical “sister” chromatids. Sister chromatids are attached at an area called centromere. … Each daughter nucleus ends up with the same number of identical chromosomes.
What is the difference between DNA and chromatin?
The DNA is packaged by special proteins called histones to form chromatin. The chromatin further condenses to form chromosomes.
|Difference between Chromosomes and Chromatin|
|Composed of nucleosomes||They are condensed chromatin fibers|
What are the 4 types of chromosomes?
On the basis of the location of the centromere, chromosomes are classified into four types: metacentric, submetacentric, acrocentric, and telocentric.
Do centromeres replicate?
Very late replication of centromeres has been proposed to play a role in centromere function (Dupraw 1968; Csink and Henikoff 1998). In contrast to expectation, we show that centromeres replicate as isolated domains early in S phase. At this time, they are surrounded by heterochromatin that has not yet replicated.
What are two chromatids together called?
…of two identical replicas, called chromatids, joined at a point called the centromere. During mitosis the sister chromatids separate, one going to each daughter cell.