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mvww 09-25-2012 11:53 AM

genes and cromossomes
DNA, genes and chromosomes are all sequences of nucleotides. So, what is the difference between them ?
I know that a gene is the collection of nucleotides that defines the code for the syntesis of a specific protein or for some human characteristic. But what defines a chromosomes?
We have 23 pairs of chromosomes. The pairs are connected with each other, or there are 23 pairs "floating" in the nucleous?

So confused!

calimaxlegal 10-21-2012 11:01 AM

Re: genes and cromossomes
dnt confuse. i dnt know too much about that. i think they are qiute same. try to have some more advice....

Kneeanderthal 10-22-2012 06:07 PM

Re: genes and cromossomes
The reason we know there are 23 chromosomes is that you can isolate them from cell undergoing mitosis (cell division). Chromosomes are a collection of genes which are made up of DNA (blue print of life). The cell packages these genes into chromosomes during mitosis in order to pass on this information to daughter cells in a more efficient manner. Otherwise the chromosomes aren't visible, they are unorganized in the nucleous.

bioprotein 08-15-2013 05:00 PM

Re: genes and cromossomes
A little late perhaps...Genes and chromosomes consist of Dna..Gene is a sequence that codes for a polypeptide chain..In the dna there are sequences that dont code for anything,for example sequendes that regulate the transcription of dna and junk..all these are organised in chromosomes.Chromosomes are dna with specific proteins that help keep it packed so it can fit in the very small nucleus.Each chromosome has many genes and all the chromoses together are tha whole dna of a eukaryote.We have 23 pairs,one set from our dad and ine from our mom.

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