Download One - ciese

Steps in the process
• Step 1: Studied dominant and recessive traits.
• Step 2:We surveyed everybody in class and
recorded the data. The 7 traits surveyed in this
project: Ear lobe, white forelock, thumbs,
pinky’s, color blindness, mid-digit hair, and
dimples.
• Step 3:Analyzed the project data to find the
percent of people showing the dominant and
recessive phenotypes for each trait.
• Step 4:Went to excel and made a graph of the
traits.
In our class, 19 students were surveyed about traits.
The traits that were surveyed were: earlobes, white
forelock, dimples, thumbs, pinkies, mid-digit hair, and
red/green color blindness.
For earlobes: free(d)14/19: attached(r) :5/19. Dom.
White Forelock: 0/19with(D) :19/19 w/out(R)
Recessive
Dimples: with(d)4/19 :without(r):15/19 Recessive
Thumbs: straight(d)4/19: bent(r):15/19 Recessive
Pinky: bent(d)7/19: straight(r):12/19 Recessive
Mid-digit hair: 19/19 with (D): 0/19w/out(r) Dom.
Red/Green color blindness: 19/19 normal vision Dom.
1600
1400
1200
1000
800
600
400
200
0
# with
#without
• With dimples is the dominant trait.
• Without dimples is the recessive trait.
• The recessive trait was the most common.
Ear Lobes
1600
1400
1200
1000
800
Series1
600
400
200
0
Detached
Attached
The recessive trait, the
attached earlobes, was
more prevalent in this
survey. However, in our class
14/19 were dominant,
having detached earlobes.
In the whole study recessive
traits were more common..
Color Blindness
2500
2000
1500
1000
Series1
500
0
Present
Not Present
Trait
The recessive,
straight pinkies,
trait was the
prevalent in this
case, though the
dominant trait,
bent, was still
showing.
1400
1200
1000
800
Series1
600
400
200
0
# straight
recessive
# bent
dominant
By Abby, Maddy, Sarah, Malik, Brett, the wonderful
people!
Mid-digit hair
• Students with out mid-digit hair
represented the recessive trait. This trait
was more common in this study than the
dominant trait, people with mid-digit hair.
Curved
Straight
We have the hitch hiker trait! (curved)
thumbs
1250
1200
1150
Series1
1100
1050
1000
# curved
# straight
There are
47% Curved
thumbs
which is
recessive
and 54%
straight
which is
dominant.
Conclusion
The recessive traits appeared most often overall in this study.
Genetic Trait Survey
# of people w/phenotypes
2500
2000
1500
Dominant
Recessive
1000
500
0
Ear lobes
White
Forelock
Dimples
Thumb
Traits
Pinky
Mid-digit
Hair
Red-Gr.
Color
blindness
Conclusions
When Comparing our class to the overall survey of
people studied, the recessive traits were still
prevalent, but we had 4 recessive traits and 3
dominant traits. The overall project study
showed 5 recessive and 2 dominant traits. In
conclusion, the Recessive traits were
prevalent.
Ideas for the future
• In the future, we’d like to see the survey
include cleft chin and widows peak.
Thanks for allowing us to do this project. We learned a lot doing this project
and studying this genetic unit.