26 27 Oompa Loompa Genetics

These are some quick exercises to make sure you have the crossing patterns mastered (so we can ask even better questions!)

Pay close attention to how the dominance patterns affect the probabilities in the offspring...

Here's the link to the worksheet if you need a copy

Here's how your classmates solved the problems:

23, 24, 25 Dihybrid crosses (23 & 24 are Guinea Pigs, 25 is Hair&Eye Color)

If you need a clearer picture of the handout, try here

So Mendel looked at his plants and wondered if the traits were related to each other, or if they were completely independent...  So he tracked plants that were hybrids of two traits (say Tt for tall/short and Yy for yellow/green seeds).

If the traits are truly independent, then whether or not you get a Y or a y has nothing to do with getting a T or t...(it's independent)

So a TtYy parent could produce:
TY
Ty
tY
ty
in equal ratios.  He then crossed the TtYy with a TtYy and made a really big Punnett square with two hybrids (A DIHYBRID CROSS!)
and found you could get
TTYY, TtYY, ttYY, TTYy, TtYy, ttYy, TTyy, Ttyy and ttyy in the expected phenotypic ratios of 9:3:3:1 of TALLYELLOW, TALLgreen, shortYELLOW, shortgreen.

Now you'll need to practice this a bit with the guinea pigs worksheet...

Check the links below for genetics tutorials, or find your own on youtube (search for dihybrid cross tutorial)

20, 21, 22 Easter Eggs!

Can you predict the "offspring" if you know the genetics(egg half color) of the parents?

Today we'll be focusing on INCOMPLETE DOMINANCE.

Fasten in the guidelines, and as a group predict the contents of your first egg!

After that, do four more :-)

16, 17, 18, 19 Inheritance: Practice

Grab the handouts, fasten them in your notebook, and get really good at using Punnett Squares for predicting inheritance...

Want more help, or just the worksheets?  Search for "bikini bottom" at sciencespot.net

*(and yes, the answers are there too if you want to double check your work...)

14, 15 Gleeps!!! (beans and Punnett Squares)

If you need to learn more about Punnett Squares, try this link:
http://www.biology.arizona.edu/mendelian_genetics/problem_sets/monohybrid_cross/01t.html

On pages 14&15, fasten the GLEEPS handout.
Work in pairs
Once you have finished question 1, test your "hypothesis" with the beans
Beans & cups are on the lab materials cart. (each group needs 2 cups, 20 black and 20 white beans)

After checking with Mr. C, enter your data on the class chart
https://docs.google.com/spreadsheet/ccc?key=0AiHFMOszKcWIdFV0MllUSHQ3WUh5UlFqQzFDSXlPbFE

For question 3 - use a neighbor or the data in yellow on the class data sheet
For question 4 - use the data in yellow on the class data sheet


:-)

10,11,12,13 Investigating Inherited Traits

There are a lot of good questions here, start with the activity of coin flipping (halfway down p.11)
Write down your coin flips, genotype, and phenotype on p.12
Draw the picture on p.12
Now answer all the questions on pp.10-13 :-)

9 Genetics Foldable

8 key words on the outside - one must know these words to discuss genetics!

Inside (3 things each)
(1) Definition
(2) Visual
(3) Example

Pages 1,2,3,4,5,6,7,8

Notebook setup, see picture below!

Make sure you complete, sign, and have your parents sign on page 8

http://www.flickr.com/photos/69142047@N02/6679221605/

Welcome to 2012

Happy Spring (well almost...)

This semester we'll be learning about how life reproduces itself, and the different (or similar) ways that life goes about doing it's thing(s).

Check below for details about the notebook requirements.

:-)

Monday & Tuesday = Put it together days

A chance for you to demonstrate that you've finished your Big Picture Assignments (pp.95-100) and to finish up any notebook checks.

We'll also be working in groups to check our understandings of the Big Picture(s).

Finals schedule is Wednesday periods 1,2,3,4 and Thursday periods 6,7,8

Finish strong, remember to focus - and let's have a little fun while we're at it!