Chromatin Material

Discovery
Chromatin material was first discovered in 1878 by Walter Flemming, an anatomist from Germany. He named what we now know as chromosomes “chromatin.” An optical microscope was used to look up close at the organelle. It got its name from chromosomes since they are made up of chromatin.


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Function
Chromatin is found in the nucleus of our cells and its primary function is to compress the DNA into a compact unit that will be less voluminous and can fit within the nucleus. Chromatin is stringy and looks like thin noodles. It has a strong structure which is necessary for cellular reproduction so it doesn't get damaged. Also, its stringy shape allows it to easily compact itself and form chromosomes.
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Chromatin also consists of small proteins known as histones and DNA.

Histones - Help organize DNA into structure known as nucleosomes by providing a base the DNA can be wrapped around.

DNA - Genetic material

What Type of Cells Contain Chromatin?
Only eukaryotic cells contain chromatin since they have a defined nuclei. Prokaryotic cells do not contain chromatin because they have a different way to organize their DNA. Their equivalent to chromosomes is known as genophore.
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What Type of Cells Require a lot of Chromatin?
All eukaryotes require a lot of chromatin. In both plant and animal cells chromatin is needed for sexual reproduction and cellular reproduction. As organisms grow, cells keep on multiplying to support every part of the organism. Chromatin condenses into chromosomes which are a major part of cellular division (mitosis and meiosis). Chromatin contains the DNA of an organism and when cells divide they need to carry the DNA along with them.


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ExampleAn example of a cell in the human body that would use chromatin is bone cells. As said above, chromatin compacts into chromosomes which play a role in cellular reproduction. As a human grows, their bones get bigger, so bone cells need chromatin in order to produce more cells and promote growth of the bones.nieves 13.jpgnieves 14.jpg

Does Chromatin work together with other organelles?
Chromatin material works in conjunction with the nucleus. Strands of chromatin are found within the nucleus and store the genetic makeup of the cell, so when the cell divides the DNA goes along with it.
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Cell Analogy
Deflation: Air mattress
When an air mattress gets deflated it goes from having a large volume to being compacted and easily foldable in order to fit inside a bag.


DNA: Chromatin material
A strand of DNA is 6 feet long, therefore, chromatin compacts the DNA so it has less volume and fits within the nucleus.



Sources
https://www.thoughtco.com/chromatin-373461
https://www.yourgenome.org/stories/the-discovery-of-dna
https://www.ncbi.nlm.nih.gov/books/NBK9863/
https://www.genome.gov/26524120/chromosomes-fact-sheet/


The End!

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