It's true.

"In science it often happens that scientists say, 'You know that's a really good argument; my position is mistaken,' and then they would actually change their minds and you never hear that old view from them again. They really do it. It doesn't happen as often as it should, because scientists are human and change is sometimes painful. But it happens every day. I cannot recall the last time something like that happened in politics or religion."

Carl Sagan (1934 - 1996), 1987 CSICOP Keynote Address

Thursday UPDATED

So today the plan was:

1. Finish video
   
2. Start 10.4 Notes
   
3. Do this homologous structures activity:

Homologous Structures Activity

However, TWO HOUR LATE START.

Also, the link doesn't work from S-3 computers.  Therefore, I will be handing out the worksheets and if you complete this by Wednesday, it's worth 2 extra points.  :-P 2 points you say?  Ask anyone whose grade didn't round up .01% last quarter. peer student pressure: it'll be worth 4, which is as much as any of the worksheets this week.

Today WE DID:

1. Finish video
   
2. Some of us: started 10.4 Notes

FOR TOMORROW:

1. 10.4 Study Guide Due
   
2. Predator-Prey Due

FOR MONDAY:

1. Flowchart Bird Beak Lab
2. Data Table into Lab Book

Week of February 23

Monday

• Final Quiz for Chapter 7
  
• Darwin Time Magazine Reading
• For Tomorrow: Read 10.1, 10.2

Tuesday

• Chapter 10 Vocabulary
• HHMI Lecture: Introduction
• For Tomorrow: Read 10.3, Study Guide

Wednesday

• Stamp and Go over 10.3 Study Guide
• Predator-Prey Dynamics Activity
• For Tomorrow: Read 10.4, Study Guide

Thursday

• Go Over 10.4
• Lecture: Evidence
• Embryology

Friday

• Bird Beaks Activity
• Answer the questions for Monday

Last Week, This Week

February 9 - 13, 2009

• Monday: Pedigrees
• Tuesday: Genetics of Taste 1, 2
• Wednesday: Genetics of Taste 3, 4
• Thursday: Experimental Plan
• Friday: Lab Day

February 18 - 20, 2009

• Wednesday: Planning for Presentations
• Thursday: Presentations
• Friday: Presentations

February 23: Chapter 7 Wrap-Up Quiz

More Genetic Disorders

Interesting Article from Joel M. Charrow, MD, Children’s Memorial Hospital on Missing Genes - genetic disorders related to DNA deletion.

Monday and a Link

• Finish Genetic Disorder Notes
• Notes on Pedigrees

This week:

• Genetics of Taste Activities
• Lab Design
• Experiments Friday

Link:

• Scientific American Online
• I'll give you the password tomorrow.

PS It's snowing in Seattle but the roads are clear so we'll see!

Grade Updates

Skyward is down for maintenance.  Updated grades are forthcoming. 

Notes on Today

• Quiz
• Genetic Disorders Notes

Caleb: DNA Polymerase does the proofreading

Sam: narcolepsy

Spina Bifida. 

CORRECTIONS ON THE ANSWER KEY

5. Yes, this is possible, if you start with Red and White flowers every time.

14. My cross shows an Orange male, not a Black male.  As a result, my answers follow those instead of the correct cross.

NOTE ABOUT CATS: This is an example of "X Chromosome Inactivation".  This is explained in section 7.1.

Thursday 2/5

• Finish Notes on Sex-linked Traits
  
• For tomorrow: Read 10.4

QUIZ TOMORROW:

• Incomplete Dominance
• Codominance
• Sex-linked Traits
• Blood Types

Although this is "covered" in sections 10.1 and 10.2, looking over the notes is much better for this information. 

Wednesday 2/4

Happy Sri Lanka national day!

Today:
- Go over di-hybrid crosses
- Returned quizzes (corrections due Monday!)

1, 5, 6: Sex-Linked Traits
Do the problem set for tomorrow.

2, 3: Tomorrow: Notes on Sex-Linked Traits

FRIDAY:

Quiz:
- Incomplete Dominance
- Codominance
- Sex-linked traits
- Blood Type

Note: We're waiting on supplies for our next lab.

Tuesday 2/3

Today:
- Blood Type Notes
- Turn in Codominance Worksheet if you haven't already
- Check off Dihybrid Cross

Tomorrow:
- Go over Dihybrid Cross
- Return Quiz
- Return worksheets

Wholphin Scientific Name

Tursiops truncatus x Pseudorca crassidens.

Notice that "Pseudorca" = false orca

Cloning Extinct Species

Extinct ibex is resurrected by cloning...for about 7 minutes.