GENETICS AND
HEREDITY
Faris Alsalman
9C
Parent Characteristics
■ Mother:
■ Father:
■
Hair Color: Brown (Bb) Heterozygous
■
Hair color: Black (BB) Homozygous
■
Hair Type: Straight (SS) Homozygous
■
Hair Type: Straight (SS) Homozygous
■
Eye color: Brown (Ee) Homozygous
■
Eye color: Brown (Ee) Homozygous
■
Height: Short (tt) Homozygous
■
Height: Medium (Tt) Heterozygous
Punnet Squares (1)
■
■
Hair Color
Mother
B
• Hair Color
•
B
Mother
S
S
Father
Father
B
BB
BB
S
SS
SS
B
BB
BB
S
SS
SS
• Offspring:
Black Hair
100%
(Homozygous)
Example: Boy with
Straight and Black
Hair.
• Offspring:
Straight
Hair 100%
(Homozygous)
Punnet Squares (2)
■ Eye Color
■
Eye Color
•
Mother
E
e
EE
Ee
t
t
Tt
Tt
e
Father
T
Father
E
Mother
Ee
ee
Offspring:
75% Brown
Eyes.
25% Blue Eyes.
(Heterozygous)
t
tt
tt
Offspring:
50% Medium
Height.
50% Short
Height.
(Heterozygous)