DNA MADE OF ONION

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DNA MADE OF ONION

• By Brandon Bain

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DNA

• DNA was discovered about 100 years ago by
  Friederich Miescher. DNA is the material inside
  your body that holds genetic information. The
  nucleus holds your DNA inside cells in the body.
  DNA is also long and stringy when you look at it
  closely.

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To find DNA I'm going to do anexperiment

• Materials used in experiment
• A medium sized onion, a knife and cutting board,
  a blender, salt, a strainer or sleeve,
  dishwashing liquid or clear shampoo, two 12oz. or
  more glasses or jars, masking tape, something to
  write with, spoons, and a stick, meat tenderizer,
  rubbing alcohol, coffee filter.

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STEP 1

• Chop an onion into small chunks and put it in the
  blender.

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STEP 2

• Add a teaspoon of salt and twice as much water as
  the onion mixture. Blend for about 10 seconds.
  You should end up with a mushy mixture.

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STEP 3

• Label two clear glasses with masking tape. Write
  control on one and liquid soap and enzymes on
  the other.

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STEP 4

• Strain the onion slush by poring it through a
  strainer or sleeve.

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STEP 5

• Fill between one-third and one-half of each glass
  with the onion juice. Pour the same amount into
  each.

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STEP 6

• Add dishwashing liquid, one-sixth the amount of
  the onion juice to the glass labeled liquid soap
  and enzymes.

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STEP 7

• Add a half teaspoon meat tenderizer to the glass
  labeled liquid soap and enzymes.

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STEP 8

• Stir gently and wait ten minutes. Dont stir too
  hard or you will break the long fragile DNA
  molecules. Use a different spoon to stir each
  glass.

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STEP 9

• SLOWLY, pour alcohol into each glass. The amount
  of alcohol in each glass should be equal to the
  mixture in the glass. Dont stir!

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STEP 10

• You should see alcohol floating on top of your
  onion mixture. After few minuets stringy globs
  will appear in it. THATS THE DNA!

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STEP 11

• Slowly swirl a stick through the alcohol. DNA
  clumps should stick to it. You can then lift them
  up for a closer look. Go ahead and touch the DNA
  but wash the slimy stuff off your hands after
  ward.

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MY CONCLUSION

• From making a DNA model, I learned that DNA
  is very useful to decipher the genetic code of
  the living object. I also learned that you can
  take one cell and break it down into chromosomes
  and stretch it so that you can see how DNA
  strand is created. By looking at each strand you
  could see how the nucleotides make each cell
  different in its own way. As a result of finding
  DNA farmers can improve their crops by using
  different seeds and finding the best type of seed
  for that region. DNA can also be altered to make
  plants insect resistant.