Biology Traits lab Due Feb. 2nd, 2015

Traits Lab (graphing skills, analysis and predictions)

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 traits 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).

TRAITS	DOMINANT	RECESSIVE
Space Between Top Teeth	Space	No Space
Chin Shape	Cleft	No Cleft
Rolling Tongue in a “U” Shape	Can Roll	Can’t Roll
Tongue Flipping	Flip	Can’t Flip
Eye Color	Brown/Green	Blue/Gray
Hand Usage	Right	Left
Hair Color	Not Red	Red
Hair Type	Curly	Straight
Hair Shade	Dark	Blond
Earlobes	Detached	Attached
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 Finger “Pinky” Shape	Bent Pinky	Straight Pinky
Eyebrows	Bushy	Fine
Fold both hands	Right thumb on top	Left thumb on top
Mid digit hair (knuckles)	Present	Not present