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Chromosomes

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					Chromosomes
A lot of information in a very small package!

Prokaryotes vs. Eukaryotes
 PROKARYOTES
– have very scattered DNA in their cells.

 EUKARYOTES
– keep their DNA in the nucleus – and will produce chromosomes.

DNA Size

 Human DNA:
–around one meter long in a cell that can only be seen under a microscope!!!

Chromosomes
 Tightly wound segments of DNA.
 DNA is wound like thread on a spool around proteins called histones.  Chromatin is the name given for the wound up DNA.

Human Karyotype: 46 Chromosomes


				
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posted:5/14/2008
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Lynne Conner Lynne Conner
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