25 - Ending on Monday we have learned that DNA is a double stranded molecule and the monomers are nucleotides The nucleotides are adenine thymine

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Ending on Monday, we have learned that DNA is a double stranded molecule and the monomers are nucleotides. The nucleotides are adenine, thymine, guanine and cytosine. RNA is a single stranded molecule and the monomers are also nucleotides. The RNA nucleotides are adenine, uracil, guanine and cytosine. Each has a sugar-phosphate backbone. The phosphate and sugars are identical. This means that the chemical difference between each nucleotide is in the base. But this still does not explain how genetic information is stored. DNA is long term data storage. Like the DVD drive in your computer. I have used DVD as the example because the information on the DVD can be faithfully replicated onto a new DVD. mRNA is short-term data storage and transfer. Like the RAM in a computer. Information is stored on mRNA only while it is needed to make a protein. When the protein is no longer needed, mRNA is destroyed. When you turn of your computer, what is in RAM disappears. 1
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Okay, so DNA and mRNA are data storage and transfer molecules. This still does not explain how the data is stored. Your computer uses ones and zeros, the binary code. You can think of each base in DNA equivalent to a bit. The bit can be either a 1 or a 0. A base can be either an A, T, G or C. A single bit in your computer or a single nucleotide of DNA is not information. A computer strings bits into bytes and billions and billions of bytes are required to represent a program such as Power Point. In DNA and RNA, the information is represented by a
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 04/07/2008 for the course BIOS 101 taught by Professor Plantz during the Spring '08 term at UNL.

Page1 / 7

25 - Ending on Monday we have learned that DNA is a double stranded molecule and the monomers are nucleotides The nucleotides are adenine thymine

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online