does dna have colour

Scott Coutts scott.coutts at med.monash.edu.au
Fri Feb 25 22:56:53 EST 2005

Bob wrote:
> On Sat, 26 Feb 2005 01:18:56 +0100, "xoolit"
> <REMOVECAPSalen at ikorcula.net> wrote:
>>but algae has dna right - 
> yes, all organisms do (with a minor footnote for some viruses).

Those damned viruses are always complicating things ;)

>>what is dna's role in algae's life... 
> Same as in yours; it is the genetic information (the blueprint).
> I would modify Scott's answer slightly by saying that DNA is white, if
> you actually had pure DNA (a white solid). Solutions of DNA are
> transparent -- at least for visible light.

Yeah, but it's not really white. It's only white because of diffraction 
and reflection, not colour... Same as salt and sugar. They're actually 
colourless, not white.

>>ok i am serious but sometimes i ask stupid questions...

No problems with asking any questions you want! The only reason I posted 
that bit at the top about whether it was a serious question is that, on 
this group, it's sometimes hard to tell... there's always people posting 
strange things and often they're obviously not serious... so ask all you 

>>i still dont want to give up...
>>why i see dna in colour of algae's greenbrown  i dont know i wanted to 
>>connect the dna with thoughts of human beings and i know there is some 
>>connection ...
> nope; only that the DNA of humans is responsible for us developing a
> brain.

Yeah, the colour you see is not associated with the DNA of the algae, 
anymore than it is associated with the gree colour of plant leaves, the 
red colour of an apple or anything else. An overly simplified 
explanation is that the DNA is just a long set of instructions for how a 
cell should construct it's components.

Hope that makes some sense.



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