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Unit 3 Part 2 - Ch 16: Molecular Basis of Inheritance

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Question:

DNA in bacteria vs Eukaryotes? Chromatin?

Author: AMRIT KAUR



Answer:

- The bacterial chromosome is a double-stranded, circular DNA molecule associated with a small amount of protein​. In a bacterium, the DNA is “supercoiled” and found in a region of the cell called the nucleoid​- Eukaryotic chromosomes have linear DNA molecules associated with a large amount​of protein​. In the eukaryotic cell, DNA is precisely combined with proteins in a complex called chromatin​. Chromatin is loosely packed in nucleus during interphase and condenses prior to mitosis. If DNA is more packed, it is harder to read DNA and use instructions. Chromatin undergoes changes in packing during the cell cycle​


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- The bacterial chromosome is a double-stranded, circular DNA molecule associated with a small amount of protein​. In a bacterium, the DNA is “supercoiled” and found in a region of the cell called the nucleoid​- Eukaryotic chromosomes have linear DNA molecules associated with a large amount​of protein​. In the eukaryotic cell, DNA is precisely combined with proteins in a complex called chromatin​. Chromatin is loosely packed in nucleus during interphase and condenses prior to mitosis. If DNA is more packed, it is harder to read DNA and use instructions. Chromatin undergoes changes in packing during the cell cycle​
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