2007-09-26 10:37:03 · 4 answers · asked by Nadiya S 1 in Science & Mathematics ➔ Biology
To me it looks like white gelatin, or even white mucous that is coughed up. Gross huh?
But when one isolates DNA, it can also be invisible, as it is dissoved in a high salt solution (BTW it is also invisible in the nucleus).
When you add alcohol to the solution, DNA will become insoluble, and will appear as the white mucous.
Then, usually, you spin down the DNA in a centrifuge, and it becomes a tight little pellet, usually still white.
The supernatant (the salt/alcohol solution) is poured off and water or a buffer is added, and then the DNA dissappears again, as it dissolves in both of these commonly used solutions.
Great Question. Spread the good Karma!
2007-09-26 11:11:05 · answer #1 · answered by dumbdumb 4 · 0⤊ 0⤋
i saw this movie about DNA/life, and they showed DNA in its isolated form and its clear, with a peas in a pod look but in a straight line.
2007-09-26 18:16:34 · answer #2 · answered by artqueen567 1 · 0⤊ 0⤋
What did you get the DNA from? strawberry? banana? kiwi? onion?
Usually looks rather cottony while it is still suspended in the alcohol layer, but looks white and slimy when the DNA is pulled out of the alcohol.
2007-09-26 17:43:43 · answer #3 · answered by ecolink 7 · 0⤊ 0⤋
It is a double helix.
2007-09-26 19:50:39 · answer #4 · answered by spool 3 · 0⤊ 0⤋