I already asked this question but miss-spelled the word previously..
I know that DNA contain chromosomes, but do they contain chromatin? (not chromatid)
2007-11-17 09:04:05 · 3 answers · asked by xxteresa 2 in Science & Mathematics ➔ Biology
opps!! I meant to say "bacteria contain chromatin" not DNA. haha sorry.
2007-11-17 09:32:52 · update #1
Yes. Chromatin is the complex of DNA and protein that makes up chromosomes. It is found inside the nuclei of eukaryotic cells, and within the nucleoid in prokaryotes. [1] The nucleic acids are in the form of double-stranded DNA (a double helix). The major proteins involved in chromatin are histone proteins, although many other chromosomal proteins have prominent roles too. The functions of chromatin are to package DNA into a smaller volume to fit in the cell, to strengthen the DNA to allow mitosis and meiosis, and to serve as a mechanism to control expression. Changes in chromatin structure are affected mainly by methylation (DNA and proteins) and acetylation (proteins). Chromatin structure is also relevant to DNA replication and DNA repair.
Chromatin is easily visualised by staining, hence its name, which literally means coloured material.
To say that "DNA contain chromosomes" is an improper use or a misunderstanding of the term. Rather one should say that genomic DNA is PACKAGED into discrete units called chromosomes.
2007-11-17 09:19:19 · answer #1 · answered by java2bobby 3 · 1⤊ 1⤋
All about chromatin:
http://en.wikipedia.org/wiki/Chromatin
2007-11-17 17:12:04 · answer #2 · answered by Richard B 7 · 0⤊ 1⤋
Bacteria does not have chromosomes... their DNA remains unwound. They transfer information through recombination occasionally with plasmids.
2007-11-17 17:16:14 · answer #3 · answered by ? 2 · 0⤊ 1⤋