Tag Archives | Eukaryotic Chromosomes

Molecular Structure of Centromere

In this article we will discuss about the molecular structure of centromere. Eukaryotic chromosomes possess a segregational device called centromere which is responsible for the chromosomc movement during cell division. Chromosome fragments without a centromere (acentric fragments) are unable to move to any of the poles during cell division; as a result, they are excluded from the daughter nuclei and [...]

By |2016-07-12T13:51:01+00:00July 12, 2016|Eukaryotic Chromosomes|Comments Off on Molecular Structure of Centromere

Organisation of Chromatin Fibres

In this article we will discuss about:- 1. Coiled DNA Model 2. Nucleosome-Solenoid Model of Chromatin Fibres.  Coiled DNA Model: This model of chromatin structure was proposed by DuPraw in 1965. As per this model, DNA molecule is associated with three classes of proteins: (i) Lysine rich histories: They are common to both A and B type fibres and are [...]

By |2016-07-12T13:51:01+00:00July 12, 2016|Eukaryotic Chromosomes|Comments Off on Organisation of Chromatin Fibres
Go to Top