 HAPPY FRIDAY 
Bellwork: Copy only the UNDERLINED WORDS and ANSWER the
questions.
Tongue Rolling (T) is dominant to Non-Tongue Rollers (t).
1. What are the possible GENOTYPES for the tongue-rolling trait?
2. What are the possible PHENOTYPES for the tongue-rolling trait?
3. If an individual was HOMOZYGOUS RECESSIVE for tongue-rolling,
what would their PHENOTYPE look like? Their GENOTYPE?
**Glue only the top portion of your HW to Page 30 of your I.A.N. to
allow you to flip and the see the back as well. Title it “Punnett Square
Practice”**
Tongue Rolling (T) is dominant to Non-Tongue Rollers (t).
1. What are the possible GENOTYPES for the tongue-rolling trait?
TT, Tt, tt
2. What are the possible PHENOTYPES for the tongue-rolling trait?
Tongue Rolling and Non-Tongue Rolling
3. If an individual was HOMOZYGOUS RECESSIVE for tongue-rolling,
what would their PHENOTYPE look like? Their GENOTYPE?
Phenotype = Non-Tongue Roller
Genotype = tt
**Glue only the top portion of your HW to Page 30 of your I.A.N. to
allow you to flip and the see the back as well. Title it “Punnett Square
Practice”**
Standard: B6F - Predict possible
outcomes of genetic combinations
such as monohybrid crosses.
Essential Question: How can I
predict genetic outcomes?
Punnett Square practice…
1. What would be the possible outcomes for the offspring of a
cross between pink flower (PP) and a white flower (pp)?
p
p
P
P
Pp
Pp
Pp
Pp
P = Pink
p = White
DAD = PP
MOM = pp
**When using the letters like “P and p” OR “C and c”, draw the lowercase letter in
cursive or just make sure you make them look different. Otherwise, you might
confuse the dominant for the recessive **
Phenotype:
4 Pink Flowers
0 White Flowers
Genotype:
4 Pp
2. Long fingers are dominant (F) to short fingers (f).
Complete the Punnett square for a homozygous
recessive mom and a heterozygous dominant dad.
f
f
F
f
Ff
ff
F = Long
f = Short
ff
DAD = Ff
MOM = ff
Ff
Is the Punnett Square
Correct?
3. In a plant, long stems are dominant (L) to short stems (l). If a
homozygous dominant flower and a homozygous recessive plant are
crossed, what would be the phenotypic ratio of their offspring?
l
l
L
L
Ll
Ll
L = Long
l = Short
Ll
DAD = LL
MOM = ll
Ll
Genotypic Ratio:
0 LL : 4 Ll : 0 ll
4. Straight hair (C) is dominant to curly hair (c). What would be
the probability that a child would have curly hair if both
parents are heterozygous dominant?
C
c
C
c
CC
Cc
Cc
cc
C = Straight
c = Curly
DAD = Cc
MOM = Cc
25% chance of a child
having curly hair
5. Having a hitchhiker's thumb is a dominant trait (T). If
a woman with a straight thumb has a child with a man
who is heterozygous for the trait, what are the chances
their child will have a hitchhiker's thumb?
T
t
t
Tt
tt
t
Tt
tt
T = Hitchhiker
t = Straight
DAD = Tt
MOM = tt
50% chance of have a
child with Hitchhiker’s
thumb.
6. What would the phenotypic and genotypic ratios be
for two purple (Pp) flowers that were bred together?
P
p
P
p
PP
Pp
Pp
pp
P = Purple
p = White
DAD = Pp
MOM = Pp
Phenotype:
3 Purple Flowers
1 White Flowers
Genotype:
1 PP : 2 Pp : 1 pp
Human Pedigree – A Family Tree Project
Essential Question: “Why do offspring resemble
both of their parents?”
• REQUIREMENTS FOR PEDIGREE
• POSTER SIZE: Smallest dimensions = 11 X 17
• TITLE: Family Name
• KEY: Trait(s) & Gender Symbols
• FAMILY MEMBERS: First Names
• CONNECTEDNESS: Lines connecting people in the
family
EXTRA CREDIT!!! - Bring up your semester
average to passing or a higher letter grade!
Required: Siblings/You  Parents  Grandparents
(0 points extra!)
Extra Credit: Cousins/Siblings/You  Parents/Aunts/Uncles 
Grandparents (10 points extra!)
Extra Credit: Cousins/Siblings/You  Parents/Aunts/Uncles 
Grandparents/Great Aunts/Great Uncles  Great Grandparents
(20 points extra!)
Going beyond Great, great grandparents will not receive further
extra credit. (0 points extra!)
Make a cupcake family tree, a 3D model, or a YouTube Video,
etc… Let your imagination run WILD!!! (10 points extra!)
Over the break…….
Since some of you will see family members,
see who has what and keep track of them.
Choose ONE TRAIT from the following list that
you want to follow along your family tree.
Widows Peak vs Non-Widows Peak
Tongue-Rolling vs Non Tongue-Rolling
Almond Shaped-Eyes vs Round ShapedEyes
Right-handed vs Left-handed
Attached Ear-Lobes vs Unattached
Ear-Lobes
Freckles vs No Freckles
Hitchhikers Thumb vs Straight Thumb
Cleft Chin vs Non-Cleft Chin
This activity is adaptable to
everyone’s family situation. If
you have any questions about
how to draw a pedigree for your
particular family, please see me.
WARNING!
Not completing the project will leave you
in jeopardy of failing the 3rd SixWeeks/Semester.
Can you identify your own genotypes
and phenotypes?
Hairline:
Widow’s peak is dominant to
straight hairline
Eye Shape:
Almond eyes
is dominant to round eyes
Eyelash Length:
Long eyelashes is dominant to
short eyelashes
Tongue Rolling:
CAN roll the tongue
is dominant to cannot
Hitchhiker’s Thumb:
Hitchhiker’s thumb is dominant to
straight thumb
Lip Thickness:
Thick lips
are dominant to thin lips
Genetics Notecards
Pre-AP Biology
Due Friday (12/12/14)
Karyotype
Trisomy 21
DNA Fingerprint
Gene
Allele
Hybrid
Purebred
Recessive
Dominant
Genotype
Phenotype
Homozygous
Heterozygous
Monohybrid
Dihybrid
Pedigree
Co-Dominance
Incomplete
Dominance
Polygenic
Sex-Linked
Meiosis
Gamete
Somatic
Haploid
Diploid
Wizard Genetics
Due by the end
of class and is for
a grade.