1. LO: SWBAT understand how DNA stores genetic material
DN: What is DNA? What is the function of DNA?
HW: Vocab: DNA, nucleic acids, genes, chromosomes, genetic code, nucleotide, bases, base sequence
Page: read pp , page 294# 2,3,4

2. Carries the instructions for cell activities
What is DNA?
Deoxyribonucleic acid
Carries the instructions for
cell activities

3. Nucleic Acids
Nucleotides
DNA or
RNA
Phosphate
Sugar
Base

4. What are these instructions?
GENES
How did we get our genes?

5. Genes DNA chromosomes nucleus
Where are genes found?
Genes DNA chromosomes nucleus
(Largest)
(Smallest)

6. How does DNA make up our chromosomes?

7. What do our genes give us?
Our characteristics or traits
Cleft Chin
Dominant (1 copy)
Recessive- 2 copies

8. Dimples
Dominant
Recessive

9. Free earlobes
Dominant
Attached Earlobes
Recessive

10. Face freckles dominant No face freckles recessive

11. No Hitchhiker's thumb dominant
Hitchhiker's thumb recessive

12. No Widow's peak recessive
Widow's peak dominant
No Widow's peak recessive

13. How many genes do we have?
Thousands on ______ chromosomes 46

14. How does DNA carry the genes?
The structure of DNA allows it to carry the genetic code
It is a double helix made of repeating nucleotides

15. What is a nucleotide made of?
4 types
Deoxyribose
Subunits of DNA

16. What bases make up the DNA ladder rungs?
Adenine
Thymine
Guanine
Cytosine

17. All …. Teachers Go …. Crazy
How do the bases pair up?
All …. Teachers
Go …. Crazy

18. What holds the DNA base pairs together?
Weak hydrogen bonds
3 Hydrogen Bonds
2 Hydrogen Bonds

19. What in the DNA is unique in all organisms?
The base sequence

20. What part of DNA carries the genetic code?
The base sequence holds the genetic code.
Each organism has a different sequence of bases

21. Let’s review 1. Where is DNA found? 2. What determines our traits?
3. Where are genes located?
4. What part of DNA carries the genetic code?
Genes

22. ALL TEACHERS GO CRAZY