1. 1/15 & 1/16 - 7th Grade Agenda Learning Objective: Human Traits
Collect HW Genetic Activities Worksheet
1st Semester Final Exam
Video: Test Your Brain
Text Book Reading: 192 – 198
HW: Reading & Notetaking p. 101 – 104
HW: Science Fair Background due 1/17 & 1/18 (10 Points)
Last day to turn in late work for the semester: 1/22 & 1/23

2. Last Day to Turn in Latework for this Semester 1/22 & 1/23

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. Hybrid Animals Donkey Horse Mule
All male and most female mules are infertile
More intelligent than a donkey
More endurance than a horse
Requires less food than a horse
Mule

12. Ligers = Male Lion + Female Tiger

13. More Ligers

14. Tigon = Male Tiger + Female Lion

15. Zorse = Male Zebra + Female Horse

16. Wholphin = Dolphin + False Killer Whale

17. Wolfdog = Wolf + dog

18. House Cat + African Cat
African Cat

19. Tangelo = Tangerine + Grape Fruit

20. 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

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

22. What are the Female Sex Chromosomes?XX

23. 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

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

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