1. “Don’t let what you cannot do interfere with what you can do.”
1/2/2019
Title: Biology 1/19/07
Objectives:
To review learning about genetic variation due to meiosis and about gametogenesis
Class Topics
Hand in the W.S. Meiosis before the bell rings
Review Chapter 7 Quiz 1
Review Chapter 7
Writing
“Don’t let what you cannot do interfere with what you can do.”
John Wooden
Wednesday, January 02, :53 PM

2. Class Assignments Meiosis W.S. 1/19/07 Disability Essay 1/19/07
1/2/2019
Class Assignments
What
By When
Meiosis W.S. 1/19/07
Disability Essay 1/19/07
Chapter 7 Test 1/23/07
Due this class period
Due next class period
Due in the future

3. 1/2/2019
Grade Sheet
2A – p. 157 (5 pts.)

4. Venn Diagram Homologous chromosomes somatic cells gametes 1 division
1/2/2019
Venn Diagram
Homologous chromosomes
somatic cells
gametes
1 division
tetrads
cytokinesis
chromatids
Synapsis
unpaired chromosomes
diploid cells
crossing over
2 divisions
haploid cells
ovum

5. 1/2/2019

6. 1/2/2019

7. Sperm vs Ovum Sperm Ovum size - small moves by flagellum
1/2/2019
Sperm vs Ovum
Sperm
size - small
moves by flagellum
millions made per day
no food
produced in testes
Ovum
size - very large
no movement
fixed number
all made by 3rd month of development
Yolk (amnion) supplies food
Ovaries

8. Test Review Topics Separation of homologues Differences between
1/2/2019
Test Review Topics
Separation of homologues
Differences between
Anaphase and anaphase I
Metaphase, metaphase I, metaphase II
Chromosome actions and views in meiosis and mitosis (pictures)

9. Test Review topics Crossing over What? When? Where in the body? Why?
1/2/2019
Test Review topics
Crossing over
What?
When?
Where in the body?
Why?
How?
What if crossing over doesn’t occur?
How often?

10. Test Review topics Gametogenesis Differences between sperm and ova
1/2/2019
Test Review topics
Gametogenesis
Handout (9 questions and labels)
In males
Differences between sperm and spermatids
In females
Why are polar bodies formed?
Unequal division of what?
Differences between sperm and ova

11. 1/2/2019
Essay
A man is telling you that he has pet opossums (2n = 22) that have babies (joeys) that aren’t identical twins, but are identical genetically. Explain in a paragraph why that would be highly unlikely to have occurred. Reference and explain independent assortment, crossing over, and random fertilization.

12. 2 sheets of paper 1st sheet to hand in 2nd sheet
1/2/2019
2 sheets of paper
1st sheet to hand in
Name, today’s date, class period
Disability essay
2nd sheet
Notes
Brainstorming
organization

13. Grading Focus Support/Elaboration Organization Integration Conventions
1/2/2019
Focus
Clearly stated opinion
Stay on topic (opinion)
Conclusion = ties all together
Support/Elaboration
Specific examples used
Examples are explained and relevant
Organization
Logical sequence
Paragraphs are appropriate
Conclusion and introduction used
Transitional devises used
Integration
Does the paper deal the appropriate topic
Did you follow the assignment
Conventions
Grammar
Grading

14. Disabilities Read the article (please do not write on the paper)
1/2/2019
Disabilities
Read the article (please do not write on the paper)
“Surgery to stunt disabled girl’s growth raises ethical questions”
Develop your opinion
Do you agree with the parents?
Do you disagree with the parents?
Brainstorm ideas to back up your opinion
This is the most important part of your essay
Think about the other opinion and how someone would justify their opinion (multiple viewpoints)

15. Writing the essay Prewrite Write Postwrite
1/2/2019
Writing the essay
Prewrite
Look at your ideas (brainstorming)
What is the best sequence of points?
Write
Introduction – state the topic and your opinion of the topic
Body – support your opinion with facts or strongly help beliefs
Stay focused on topic, do not stray!
Conclusion – be brief
Postwrite
Proofread – reread it at least once

16. Pattern Puzzle Each group will get a packet of paper strips.
1/2/2019
Pattern Puzzle
Each group will get a packet of paper strips.
Put them in order