Lab Report on Heredity of eye colour
Research Question/Aim: To investigate which eye colour is dominant in my family.
Variables:
Independent: The generations of my family.
Dependent: Eye colour.
Constant: My family’s eye colour trait.
Hypotheses & explanation:
I think that the dominant eye colour of my family will be brown. This is because it has been proven by scientists that the allele for brown eyes is dominant compared to other eye colours. Also, brown eyes are the most common eye colour especially in people who are from the Asian subcontinent, from where all of my family is.
Apparatus:
Mobile phone.
A list of my family members.
Diagram:
Brown eye Black eye
Method:
Call up my relatives.
Ask their eye colour.
Record their answers in the table below.
Analyze the data and graph it.
Analyze my graph and conclude which eye colour is dominant.
Scientific Inquiry and Processing Data (Criteria D & E)
Data Collection:
Family member
Eye color
Father
Brown
Mother
Brown
Brother
Black
Uncle (Mothers brother)
Brown
Grandmother (Mothers side)
Black
Aunt (Fathers sister #1)
Black
Aunt (Fathers sister #2)
Brown
Aunt (Fathers sister #3)
Brown
Aunt (Fathers sister #4)
Brown
Data Processing :
Total number of people surveyed: 9
People with brown eyes: 6
People with black eyes: 3
Males with brown eyes: 2
Females with brown eyes: 4
Males with black eyes: 1
Females with black eyes: 2
Percentage of brown eyes in my family:
Percentage of males with brown eyes in my family:
Percentage of females with brown eyes in my family:
Percentage of black eyes in my family:
Percentage of males with black eyes in my family:
Percentage of females with black eyes in my family:
From the data above, we obtain the following pie charts and pedigree chart:
Variables:
Independent: The generations of my family.
Dependent: Eye colour.
Constant: My family’s eye colour trait.
Hypotheses & explanation:
I think that the dominant eye colour of my family will be brown. This is because it has been proven by scientists that the allele for brown eyes is dominant compared to other eye colours. Also, brown eyes are the most common eye colour especially in people who are from the Asian subcontinent, from where all of my family is.
Apparatus:
Mobile phone.
A list of my family members.
Diagram:
Brown eye Black eye
Method:
Call up my relatives.
Ask their eye colour.
Record their answers in the table below.
Analyze the data and graph it.
Analyze my graph and conclude which eye colour is dominant.
Scientific Inquiry and Processing Data (Criteria D & E)
Data Collection:
Family member
Eye color
Father
Brown
Mother
Brown
Brother
Black
Uncle (Mothers brother)
Brown
Grandmother (Mothers side)
Black
Aunt (Fathers sister #1)
Black
Aunt (Fathers sister #2)
Brown
Aunt (Fathers sister #3)
Brown
Aunt (Fathers sister #4)
Brown
Data Processing :
Total number of people surveyed: 9
People with brown eyes: 6
People with black eyes: 3
Males with brown eyes: 2
Females with brown eyes: 4
Males with black eyes: 1
Females with black eyes: 2
Percentage of brown eyes in my family:
Percentage of males with brown eyes in my family:
Percentage of females with brown eyes in my family:
Percentage of black eyes in my family:
Percentage of males with black eyes in my family:
Percentage of females with black eyes in my family:
From the data above, we obtain the following pie charts and pedigree chart: