Fun Facts about DNA


DNA is an abbreviation for deoxyribonucleic acid.  The shape of DNA is a double helix and all living things are made up of DNA.   Friedrich Miescher first isolated DNA in 1869.  The only cells in the human body that do not contain DNA are red blood cells.  If all the DNA in the human body were unwound, it would reach to the moon and back six thousand times.  A single cell can contain six to nine feet of DNA.  All humans share about ninety-nine percent of the same DNA sequence.  It’s the remaining one tenth of a percent that makes us each unique.  We all share a considerable amount of DNA with many other species.  Our DNA is ninety-eight percent the same as chimpanzees’ and even fifty percent the same as bananas!

DNA makes up our genes.  DNA can be affected by the environment and as a result, environmental factors may result in certain genes expressing or not expressing themselves.  In fact, it’s believed that the majority of our genes do not express themselves.  It takes about eight hours for a cell to copy its DNA.  This copy process must occur before cells divide.  Each inch of DNA can store twenty-five gigabytes of information.  An entire sequence of DNA is known as a genome.  A complete map of the human genome was finished in 2003.  Mutations are changes in the DNA sequence and can be caused by exposure to things such as radiation or chemicals.  These mutations may lead to an increased risk of disease including cancer.  All of DNA’s functions depend on proteins.

All living things today contain DNA which contains our genetic material.  This may not have always been the case though.  There is a theory that RNA used to serve the function of DNA in the earliest life forms on earth.  It is difficult if not impossible to prove this theory, however, since DNA exposed to the environment survives less than one million years.

The study of DNA has numerous scientific applications.  DNA testing can determine if crops are authentic or if certain gourmet foods such as caviar and wine are authentic.  DNA testing can also help  determine a person’s risk for certain genetic diseases.  Paternity tests make use of DNA to determine  if a father and child’s DNA make-up are sufficiently similar.  Similar tests are available to identify sibling or grandparent relationships.  Modern-day forensics also relies heavily on DNA testing to determine if someone was present at a crime scene.  It can also help to identify victims of crimes or accidents.    The techniques that have been used to study DNA led to the development of string search algorithms which  Internet search engines use.  Genetic engineering can be used to create desirable qualities in offspring, such as crops that are disease-resistant.  Genetic engineering is controversial, particularly when it  applies to humans.  Some opponents worry that people will abuse the technology available and create a “super race”.

35 thoughts on “Fun Facts about DNA”

  1. Study of genetics help us many ways. But there is a limit. We should not go against the nature. Nature created man and going against the nature will lead to distruction of him.

  2. So god didn’t created you and me. We are created by combining and replicating of DNA. What is the god’s role in this process?

  3. I am God. Praise me. DNA is alright to use for your sciencey stuff. Argument over. Keep the peace and praise me. God x

  4. This websit is one of my favorite because i want to learn alot about DNA. The ression why i want to learn about this is so i can teach my kids about this. And that i would like to teach a science class on all of this stuff.Even i think it is all interesting. So if you were me what would you do? And how would you do it?

  5. you people are crazy!! God is real and that is that! and this website is for learning and not for socailizing okay!?? okay, i think i rest my case. anyway im learning about dna in school! kool right??


  7. He gave thou thy spirit, which thou cannot live without! that’s why He is real!coz if He’s not, then you’re not either! ble! XP

  8. Quote of the Month
    Thank goodness I was never sent to school; it would have rubbed off some of the originality.

  9. im doing a project bout dna right now this website teached me in a clear way…thanxs xx
    i also want to say hi to my friend Matt!!! :)

  10. god is real and he only created whole nature but we can study about natue to modify some short commings in the nature.

  11. @jessica
    Prove that god is real

    What makes you so sure that there really even is such a thing as a spirit?

    I am not saying that god is not real, nor am I saying that there is no such thing as a spirit, but just don’t try and use those kind of excuses if you cannot answer them for your defense yourself.

  12. Emma :
    you people are crazy!! God is real and that is that! and this website is for learning and not for socailizing okay!?? okay, i think i rest my case. anyway im learning about dna in school! kool right??

    Uhhhhhh, why is everyone talking about God?

  13. if your religious, maybe you shouldn’t be looking up genetic engineering and getting all pissed off when people don’t believe the same as you do. everyone is different. there is no possible way for any human to know for sure that there is a god or what comes next. i, personally don’t really care. all that matters is that you do something good with the time you have on earth, this is not what you should be doing with your life. get lifes of your own, and stop bitching to each other, it’s annoying. and by saying this i am not saying that god is not real.

  14. ok, after reading this article, it saying that EVERY inch of DNA holds 25 gigabites, and that all the DNA in our body unwound, would reach to the moon and back 6000 times, I started to wonder just how many gigabytes all the dna in our bodys, could hold. so i looked up the distance to the moon in inches, and i found that its about 15,000,000,000 inches to the moon. so here is the math problem.
    15,000,000,000 X 2 X 6,000 X 25 = 4.5e+15
    the problem is, i cant find an online calculator with a long enough display to show the hole number, it just gives me “4.5e+15” and i dont really know what that means. =( but anyway, just emagen if we could harnes the power of dna, to actuly be able to write it, and translate it with a computer, and put it all in a jump drive.
    mind boggling isnt it? i mean DANG!

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