prepping samples for yeast lab

Please get a labquest and re-familiarize yourself with it.  
Figure out how to

• change the amount of samples taken 
• change the time it records data. 
• start recording data 
• save the data
• start a new "run"

We also need to prep samples, for your lab you need

• 7 g of each type of yeast

Yeast fermentation lab

Darwin’s theory of Natural Selection was influenced by his observation that farmers regularly select individual plants and animals that have specific traits for breeding. This process is referred to as artificial selection. The domestic dog is an excellent example of this process. All dogs can interbreed and are derived from the same genetic stock. 

The yeast Saccharomyces sp. is another excellent example of artificial selection. Different strains of yeast are used to make beer, bread, and wine. As a result, brewers and bakers have used artificial selection to select very specific strains of yeast for each purpose. 

Today, in our preliminary investigation we will watch yeast ferment.  Once you have observed that phenomenon, your group will research yeast strains and investigate a researchable question dealing with artificial selection and yeast. 

Characteristics of Apes & Humans

What evidence do we have of the relatedness of Apes and Humans?

Write your hypothesis of the cladogram for gorillas, chimpanzees and apes on pg 76 with a description of what it shows and why you picked it.  
Construct the DNA model of 

• Gorilla
• Chimp
• Human
• Common Ancestor 

 

 

Fill out the data table with similarities and differences between each one.  What does this data show?  Was your hypothesis supported?
What claim can be made based on this DNA evidence? 

Design A Habitat Project

So taking the design a species project one step further!! :)
Use pgs 74-75 to brainstorm (or you can always type things electronically on a google doc)

Design a Habitat Project Honors

For this project, your will work in pairs of two. Your team will be designing a habitat for the species you previously created.  You will plan and then create this habitat on poster board or butcher paper (available in the tech center) for presentation to the rest of the class.  Both species created by team members in the previous project must be included in this habitat.

1.      Describe your habitat.  What physical features (biotic and abiotic factors) are present?  (Terrain, water source, vegetation, etc.)

What niche does each student’s species occupy in the habitat? This niche would be the separate environment within the habitat. Ex:  In a riparian habitat a bird would be the niche above ground and a fish would be in an underwater niche)

2.      The habitat you have designed will undergo an ecological pressure. This is an event that will impact your species’ environment and cause both species to adapt to the new environment.

You may choose from the following evolutionary ecological pressure events and ENTER IT BELOW: 

fire, flood, earthquake, atmospheric change (warmer, colder), meteor shower, or 

one of your own (clear this with your teacher)

Design a Habitat Sheet

Design habitats: Before:  is the original habitat

                               After: is for after the ecological pressure occurs. ECOLOGICAL PRESSURE___________

                                           Species one                                                                     Species two

	before	after		before	after
Terrain
Climate
Water source
vegetation

                                               

3.      Identify traits that make each species able to survive in their environments before the ecological pressure.

                                  Species one                                                                                        Species two

Genetic traits
Traits one
Trait two
Trait three

                                   

4.      How are your species going to respond so that they will have a chance to survive? Identify mutations that will be favored because of the ecological event. How will it give the species an advantage over others without that mutation?

5.      Identify the vehicle for speciation: geographic isolation, gene pool, natural selection, change in environment

	Species one-		Species Two	Speciation by
Mutation one
Mutation Two

6.      Create a cladogram for both of your species before the ecological event. Identify the type of evolution that created the species, convergent or divergent. After the ecological event you will add a section to the cladogram to show how your original species diverged.

Design a Habitat Rubric Honors           

Grading Category	4 points	6 points	8 points	10 points	score
Habitat	The project does not display a suitable habitat for either of the students species	The project displays a suitable habitat for one of the students species	The project displays a suitable habitat for both of the students species	The project clearly displays a suitable habitat for both student species and includes an area they both share
Species	Lists one  trait for one species that makes them suitable for their niche (environment)	List one trait for each species that makes them suitable for their niche (environment)	List two traits for each species that makes them suitable for their niche (environment)	List three traits for each species that makes them suitable for their niche (environment)
Response to Ecological Pressure	The project does not identify a mutation/adaptation any species to an ecological pressure event	The project identifies   one mutation/adaptation for  one of  the student species to an ecological pressure event	The project  identifies one mutation/adaptation for  both student species to an ecological pressure event	The project identifies two mutations/adaptations   for both student species to an ecological pressure event
Cladogram Identify & diagram either divergent or convergent evolution between the two species	Divergent or Convergent Cladogram for one species before the  ecological pressure is complete	Divergent or Convergent Cladogram for both (or including both) species before the ecological pressure is complete	Divergent or Convergent Cladogram for one species showing before the ecological pressure and after, is complete	Divergent or Convergent Cladogram for both (or including both) species showing before the ecological pressure and after, is complete
Type of speciation caused by event	Identify how speciation occurred for one species before the ecological event	Identify how speciation occurred for both species before the ecological event	Identify how speciation occurred for one species before and after the ecological event	Identify how speciation occurred for both species before and after the ecological event
Poster	One habitat is presented for one species before the ecological event	Both habitats are shown for both species before the ecological event	Both habitats before and after the ecological event and the resulting phenotypic changes are shown for one species	Both habitats before and after the ecological event and the resulting phenotypic changes are shown for both species

Work Day

Please go back through the last two labs and ensure that you have everything done
Gooney Bird Lab (pg 66)
Gooney Bird Graph (pg 67)
Gooney Bird Conclusion (pg 68)
Allelic Frequency Lab (bean lab) (pg 70-72)
Allelic Frequency Graph (pg 73)

Allelic Frequency Lab (bean lab) graph pg 73

Take the percentages for each allele and graph them on page 73.  Also make sure you have the conclusion questions answered on pg 72.

Allelic Frequency Lab pgs 70-72

Follow the directions on the pages provided today (they go on pgs 70*72, it is ok of pg 69 is blank).  Please be careful with the beans (don't leave a mess).  
We will discuss your results on Wednesday.

Gooney Bird conclusion (pg 68)

Gooney Bird Lab Analysis

Graph the beginning populations for each generation (should have three sets of data) on pg 67.

AIMS prep

Time to study for the AIMS science test :)
Student Guide, yours to keep, write all over it, use it to study
Practice Test, class copy, write your answers on the back of the student guide
Remember Study Island also has AIMS science prep
Also, Education Portal has great tutorials, not necessarily aligned to the science AIMS, but it has content above and beyond what will be tested

Gooney Bird Lab

Gooney Bird Lab pg 66

What Darwin Never Knew (pgs 64-65)

Today (and probably tomorrow) you will watch the video "What Darwin Never Knew"
Please take notes as you watch the video, and if you have any questions, write those down as well

Click here for a link to the video