2. 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 291-294, page 294# 2,3,4

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

4. Nucleic Acids DNA or RNA Nucleotides Phosphate Sugar Base

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

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

7. How does DNA make up our chromosomes?

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

9. Dimples Dominant Recessive

10. Free earlobes Dominant Attached Earlobes Recessive

11. Face freckles dominant No face freckles recessive

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

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

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

15. 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

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

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

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

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

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

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

22. 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

23. ALL TEACHERS GO CRAZY