Chromosome: Difference between revisions

The chromatin is located within the [[cell nucleus|nucleus]]. The nucleus is the place where DNA combines with proteins to form chromatin. The chromatin is made up of long thin threads. The chromatin is needed in order for a chromosome to emerge. Before the cell goes through cell division the chromatin aggregates, which makes the structure that is known as the chromosome. (Purves, 70) In a eukaryotic cell there is a dense material made up of DNA and proteins. This material is the chromatin. During mitosis the chromatin is more coiled because its nucleosomes begin to coil. The chromatin continues to fold until the chromosome begins to separate. (Purves, 169-171) In some eukaryotes, chromatin is needed in order for transcription. This process is called chromatin remodeling. There are two types of chromatin:

Euchromatin- contains DNA that is to be transcribed to RNA.

Heterochromatin- The genes are inactive and is not transcribed. (Purves, 294)