1. DNA IS LIFE The rest is just details!
Introduction to
DNA
DNA IS
LIFE
The rest is just details!

2. Do-Now: 2/02/11
Please take out your “Cracking the Genetic Code” Worksheet and give it to someone else. MAKE SURE THAT YOUR NAME IS ON IT!

3. Agenda: 2/02/11 Correct DNA worksheet
A Note on the Genetic Disorder Presentations
Ms. Morris’ Homepage
Have Your DNA and Eat It Too!

4. DNA lab You Will Need: Procedure: 5 green marshmallows (ADENINE)
5 pink marshmallows (THYMINE)
3 yellow marshmallows (CYTOSINE)
3 white marshmallows (GUANINE)
8 toothpicks
Put together the first 8 base pairs for SEQUENCE 1, as shown the worksheet
When everyone is finished, your table partner will check that your model is correct.
Once I have checked your model, you can eat it!

5. Homework:
Bring your laptop and flash drive to finalize your presentation tomorrow!
WE WILL BE PRESENTING IN THE AUDITORIUM MONDAY AND TUESDAY!

6. Do-Now 2/01/11 (Page 49)
“Our genetic instructions are found in _ _ _. _ _ _ is found in the _ _ _ _ _ _ _ of the cell.”

7. DNA... *...stands for deoxyribonucleic acid
*…is the largest molecule known
single, unbroken strand may contain many
millions of atoms and is about six feet long!
*…is found in the CHROMOSOMES
DNA molecules are made of two long chains
of smaller molecules, called NUCLEOTIDES.

8. NUCLEOTIDES Nucleotides are a combination of a sugar,
phosphate and a BASE
* There are four bases:
-known by letters ---> A, T, C and G.
A=adenine T=thymine C=cytosine G=guanine
These combine to form BASE PAIRS
A<-->T or C<-->G
Adenine always bonds to Thymine
Cytosine always bonds to Guanine

9. The base pairs... (nucleotides)
Two chains of nucleotides combine to form
the basic structure of DNA

10. This pattern of base pairs...
...is called the DOUBLE HELIX.

11. The Double Helix * These patterns of nucleotides “tell” your
cells to make proteins.
(DNA tells your cells to make thousands of proteins.)
A part of DNA (base pairs) which makes a certain protein
is called a GENE. (Gene = A Protein Recipe!)
(we have Thousand Genes!)
All these proteins (made by genes) determine
what you look like!....
(eye color,blood type,gender,some diseases,etc...)

12. GENES We get our DNA (genes) from our parents
Heredity = the passing of genes
THIS IS THE SCIENCE OF
GENETICS
Stay tuned!!