1. 1/24 & 1/25 - 7th Grade Agenda Learning Objective: Human Traits
Collect HW Genetic Activities Worksheet
Collect Late Science Fair Background
2nd Semester Pretest
Class Work: Scientific Method Worksheet
Video: BBC (Challenges of Life)
Text Book Reading: 192 – 198
HW: Reading & Notetaking p. 101 – 104
Reminder: Science Fair Procedures, Data Table & Results due 2/9 & 2/10 (15 Points)

2. Last Day to Turn in Latework for this Semester 1/24 & 1/25

3. Reflection
Prompt: Write 2 differences between DNA and RNA

4. DNA vs RNA DNA RNA Copy One Strand Leaves the nucleus Master Copy
Two Strands
Never leave nucleus
Copy
One Strand
Leaves the nucleus

5. Step 1 in Protein Synthesis
Messenger RNA Production

6. Step 2 in Protein Synthesis
Messenger RNA attaches to a Ribosome

7. Step 3 in Protein Synthesis
Transfer RNA attaches to a Messenger RNA

8. Step 4 in Protein Synthesis
Protein Grows

9. Mutation

10. Mutation nge tein type Mutation means “cha_____” in Latin
Mutation can cause a cell to produce an incorrect pro____ during protein synthesis.
As a result, the organism’s trait, or pheno____, may be different from what it normally would have been.
nge
tein
type

11. Some human traits are controlled by a single gene that has more than two alleles
Blood type is controlled by three Alleles
What are the major human blood types?
A, B, AB & O
Which human blood type is a universal donor?
Blood Type: O

12. Many human traits are controlled by many genes
Four genes control height in humans
Skin, eye and hair color are controlled by multiple genes

13. What are the Female Sex Chromosomes?XX

14. What are the Male Sex Chromosomes?XY
Because there is some missing genetic information in the “Y” chromosomes, Males are more likely to get a sex-linked trait

15. Who determines whether the child is a boy or a girl ?
Father

16. How many pairs of chromosomes do humans have?23