Is chromatin double or single stranded?
This DNA-protein complex is called chromatin, wherein the mass of protein and nucleic acid is nearly equal. Within cells, chromatin usually folds into characteristic formations called chromosomes. Each chromosome contains a single double-stranded piece of DNA along with the aforementioned packaging proteins.
Is a chromosome a single strand of DNA?
Each chromosome is a single molecule of DNA. … Our cells have all 46 chromosomes, but they are coiled around proteins and highly coiled into the form of the chromosomes that are seen to the right. The chromosomes of eukaryotes are contained within the membrane-bound nucleus.
Are eukaryotic chromosomes single or double-stranded?
Eukaryotes have double-stranded linear chromosomes composed of chromatin in the nucleus. A full set of matched chromosomes is referred to as diploid.
In which phase are chromatids pulled apart?
Metaphase leads to anaphase, during which each chromosome’s sister chromatids separate and move to opposite poles of the cell. Enzymatic breakdown of cohesin — which linked the sister chromatids together during prophase — causes this separation to occur.
Does each chromatid have a centromere?
A chromatid is a replicated chromosome having two daughter strands joined by a single centromere (the two strands separate during cell division to become individual chromosomes).
What is a single strand of DNA called?
In both cases, replication occurs so quickly because multiple polymerases can synthesize two new strands at the same time by using each unwound strand from the original DNA double helix as a template. One of these original strands is called the leading strand, whereas the other is called the lagging strand.