Traits lab guide sheet

Traits Lab for District Competency (graphing skills, analysis and predictions)

 

Back ground:  This partial lab will be used to determine your science competency for the district.  It is expected that you should be able to complete this lab with a score of 70% or higher; scoring below this # in essence suggest that you do not have the skills needed to earn credit for this class.  You may continue to redo this lab until you have a 70% score.  But your grade on the lab for my class will only change if you earn the passing score by its due date or after the first revision.

 

Task:  This is a partial lab write up you will need to include the following for your final draft:

1. Question:  Are dominant or recessive expressions of genetic traits most common in this class?
2. Hypothesis:  Insert your educated answer to the question here
3. Data Table:  must be ruled and include any observations that may affect data collection
4. With observation journal
5. Analysis:  Using the good graphing rules create a bar graph that compares the # of students that have the dominant or recessive expression of each trait you test.  Questions 1) How would testing the entire 10^th grade population affect your answer to the question?  2) Which trait(s0 were most commonly affected by environmental factors obscuring the genetic phenotype?
6. Conclusion:  write your conclusion paragraph.  Restate the hypothesis, use evidence to support your comments, address sources of error and include a next step (social context is not required).

Procedures:

1. Survey everyone in class for the presence of at least 7 genetic traits.  Coordinate with your group members you may not all test the same traits (no more than 4 can be in common) for each table group.
2. Describe any variations, environmental changes or other OBSERVATIONS of note that may influence the observance of the trait for each person tested.
1. Don’t forget to keep track of who you test and any relevant observations about trait expression for each person tested.
3. Once the data collection process is complete begin the analysis and conclusions.  This part can easily be completed at home.  Use REAL graph paper.

 

The Lab rubric/grading:

• I will grade all parts of the Format section
• Data Manipulation will be x3 pts a score for data tables, graphs and analysis questions
•  And all of the Conclusion section should be included with all sections (except Logic) worth x2 pts.

 

TRAITS	DOMINANT		RECESSIVE
Space Between Top Teeth	Space		No Space
Chin Shape	Cleft		No Cleft
Hair on Knuckles	Hair		No Hair
Rolling Tongue in a “U” Shape	Can Roll		Can’t Roll
Tongue Flipping	Flip		Can’t Flip
Eye Color	Brown/Green		Blue/Gray
Ear Lobe Attachment	Free		Attached
Hand Usage	Right		Left
Hair Color	Not Red		Red
Hair Type	Curly		Straight
Hair Shade	Dark		Blond
Nose Shape	Roman		Straight
Freckle Amount	Freckles		No Freckles
Having Dimples	Dimples		No Dimples
Hair Line	Widow’s Peak		No Widow’s Peak
Hitchhiker Thumbs	Curved Thumbs		Straight Thumbs
Little Finder “Pinky” Shape	Bent Pinky		Straight Pinky
Finder/Toe Number	6		5
Taster (PTC)	Taster		Non-Taster
TRAITS	DOMINANT	RECESSIVE		PEDIGREE DETERMINED
Hitchhiker Thumbs	Curved Thumbs	Straight Thumbs		Yes
Hair Color	Not Red	Red		Yes
Hair Type	Curly	Straight		Yes
Hair Type	Curly	Straight		Yes
Eye Color	Brown/Green	Blue/Gray		Yes
Rolling Tongue in a “U”	Can Roll Tongue	Can not roll Tongue		Yes