2011-10-18

What is a chromosome?

A chromosome is an organized structure of DNA and protein found in cells. It is a single piece of coiled DNA containing many genes, regulatory elements and other nucleotide sequences. Chromosomes also contain DNA-bound proteins, which serve to package the DNA and control its functions.
 

















Diagram of a replicated and condensed metaphase eukaryotic chromosome.
(1) Chromatid one of the two identical parts of the chromosome after S phase. (2) Centromere the point where the two chromatids touch, and where the microtubules attach. (3) Short arm. (4) Long foot
 
Original page:
http://ko.wikipedia.org/wiki/Chromosome
 

 
 
 
 














Original page:
http://images.search.yahoo.com/images
http://library.thinkquest.org/28751/review/division/1.html



Structure of a Chromosome

















Original page:
http://images.search.yahoo.com/images
http://harmonybodyphysics.com/PullingOnesSelfTogether.aspx


Cell, Chromosome, and DNA



























Original page:
http://images.search.yahoo.com/images
http://www.accessexcellence.org/AB/GG/chromosome.php