Tag Archives | Organisation

Ecological Levels of Organisation | Environment

The following points highlight the seven major ecological levels of organisations. The ecological levels are: 1. Organisms 2. Population 3. Biological Community 4. Ecosystem 5. Landscape 6. Biome 7. Biosphere. Ecological Level # 1. Organisms: They make the basic unit of study in ecology. At each level, the biological unit has a specific structure and function. At this level, the [...]

By Nikita D|2016-09-16T08:10:36+00:00September 16, 2016|Ecology|Comments Off

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 Rivika B|2016-07-12T13:51:01+00:00July 12, 2016|Eukaryotic Chromosomes|Comments Off