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muskan arora

on 14 May 2017

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Transcript of DNA

What is DNA
DNA stands for Deoxyribonucleic Acid. It is the thing which determines our eye & hair color, our mannerisms, other physical appearances & characteristics. DNA is in the shape of a double helix & is in coded form. To read DNA your RNA has to do the job.
our question
Our question for this science fair was 'Is it possible to extract the DNA from an organism?'. After conducting our experiment we have come to a conclusion that yes it is possible to extract the DNA from organisms.
RNA stands for Ribonucleic Acid. It is the thing that reads the codes of DNA. RNA is not the same shape as DNA but looks like half of a double helix.
Did you know that...
this is rna
this is the strawberries after being squished for 2 minute
This is the strawberries after the extraction liquid was added
This is the strawberry mixture going down the cheesecloth
This is the strawberry mixture after going down the cheesecloth
Fun facts
this is the mixture after the rubbing alcohol was added
our experiment
(the white stringy stuff)
the strawberry DNA
Nitrogen bases are the four strands inside DNA which come in pairs. As you can see a particular nitrogen base can only pair with another specific base. These pairs are Adenine & Thymine, & Cytosine & Guanine.
If you were to put all the strands of DNA in you body together they would reach the sun & back over 600 times.
If you put all the strands of DNA in your body together, they would reach the moon & back over 6000 times.
We share 1-4% of Neanderthal DNA.
We share 50% of our DNA with parents & siblings.
We share 40-50% of DNA with cabbages & 95-99% of DNA with chimpanzees.
We share 99.9% of our DNA with other humans
It would take a person typing 60 words per minute, 8 hours a day, around 50 years to type the human genome.
One single gram of DNA can hold an amazing 700 terabytes of data.
what is the purpose of rubbing alcohol?
When molecules are insoluble, they clump together & become visible. DNA is not soluble in alcohol; therefore, it makes the DNA clump together and become visible to the human eye.
600 times
The human genome
6000 times
The DNA inside one single cell can stretch an amazing two metres
Our experiment was extracting the DNA from strawberries. In this experiment we were required to use strawberries as they were the only fruits which were octoploids. For this we were required to make an extraction liquid consisting of salt, water & dish-washing liquid. We had to squish strawberries, add the extraction liquid then squish them again. After sieving them we were to add rubbing alcohol & wait until the DNA formed.
This is the strawberry mixture after being seived
Your genome contains many ancient viruses
Do I have DNA?
Full transcript