Cellular Reproduction and DNA

This week we are well into Module 7 of Exploring Creation with Biology.

DNA come in long strands coiled in chromosomes.  To see what a strand of DNA looks like, we extracted DNA from peas.  Split peas, that is.  Just so you know, I don’t like peas.

The first step in this experiment was to blend split peas, water, and salt.  Remember my last post when I said high schoolers will put anything in their mouths?   I have more proof.

Oh yes she did!  I am pretty sure she did not learn her lesson.  The trait “don’t put that in your mouth” is not coded until you have your own children.   Then it becomes a verbal trait, “DON’T PUT THAT IN YOUR MOUTH!”.

Unfortunately, this DNA extraction did not work as well as last year, but it was still fun to do.

To see some great pictures and a video of what we did last year go HERE.

If you were to take an animal DNA and stretched it out, it would be about two yards long. Which is pretty amazing considering the size of a cell.  Just check out cell size and scale to see what I am talking about!

Proteins from the strands of DNA are what makes genetic traits.  Trait is one of the factors that make us who we are.  Two other factors that determine our characteristics are the environmental and spiritual factors. For this post we will talk about the genetic factor.

A gene (section of DNA) is coded to produce a protein causing a trait.  This is done by Protein Synthesis: Transcription and Translation.

Transcription

Translation

DNA —transcription —> RNA —translation —> Protein

The second half of this module covers mitosis and Meiosis, which we will go over next Tuesday.

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4 responses to “Cellular Reproduction and DNA

  1. That cell size and scale link is awesome! =)
    And I wanted to ask, do you use raw split peas? Thanks.

  2. I SEE words, but don’t understand them….were you acually able to see the DNA under a microscope? Is that green sludge in your picture the peas? How do you do this every week and still have time for anything else? How do I become you when I grow up?

    • You can not see the DNA under a microscope. At least we tried last year and couldn’t see it. The strings you see are the strands of pea DNA. Please don’t become me, you’ll have a messy house and hungry children because you will only do co-op and the blog. lol

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