Wednesday, February 25, 2015

Fact of the Day: Four Letters

While DNA makes up every living thing on Earth, there are only four building blocks. Everything from animals, plants, and bacteria all have DNA which contains adenine, thymine, guanine, and cytosine. They are commonly called "letters" and they combine together to form the double helix shape. 

16 comments:

  1. That's interesting, I didnt know that.

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  2. I only know that because my son just finished recreating a 3D biology project of the DNA model.

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  3. this is really interesting. i miss my geeky, nerdy, scientific self. :( haha ;D

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  4. I know so little about this, sorry to say. Thank you for trying to educate me.

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  5. Very familiar... biology friends from long ago and far away!

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  6. There's an awesome simplicity in this building block of nature.

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  7. I learned that long ago. Then I forgot it.

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