HAPPY TUESDAY
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?
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
Collect Today
NOTHING!!!
Assigned
Page 75 – Wizard Genetics (TOMORROW)
M.K.M.S. MAKE-UP Quiz (TOMORROW)
Page 70 – Notecard Definitions (Thursday)
Page 74 – Family Tree Project Part 1 (Friday)
IBB MAKE-UP Quiz (Next Monday)
Late
Page 71 - Family Tree Project Research (-30%)
Unit 5 – Genetics
1.
2.
3.
4.
5.
6.
7.
8.
9.
PG 70
Definitions Due Thursday (12/3/15)
All Parts Due Thursday (12/10/15)
Allele
10.Hybrid
18.Purebred
Co-Dominance
11.Incomplete
19.Recessive
Dominance
Dihybrid Cross
20.Sex-linked Traits
12.Monohybrid
Dominant
13.Multiple Alleles
Gene
14.Pedigree
Genotype
15.Phenotype
Gregor Mendel
16.Polygenic
Heterozygous
17.Punnett Square
Homozygous
Essential Question
PG 73
How do I model the
predicted inheritance of a
single trait?
Standard
B6F - Predict possible outcomes of genetic combinations such as
monohybrid crosses.
Mendel’s
assumptions about
segregation predicted
a phenotypic ratio of
3:1.
Mendel’s
assumptions about
segregation predicted
a genotypic ratio of
1:2:1.
The fact that genes that segregate
independently do not influence
each other’s inheritance is known
as independent assortment.
The principle of independent
assortment states that genes for
different traits can segregate
independently during the
formation of gametes.
Independent assortment helps
account for the many genetic
variations observed in many
organisms.
Punnett Square Steps
1st Step = Identify what letter is being
used
What would be the possible outcomes for the offspring
of a cross between pink flower (PP) and a white flower
(pp)?
“P” and “p”
Punnett Square Steps
2nd Step = Assign the trait for each letter.
What would be the possible outcomes for the offspring of a
cross between pink flower (PP) and a white flower (pp)?
P= PINK
p = WHITE
Punnett Square Steps
3RD Step = Match what letters are being used for each
parent/gender.
What would be the possible outcomes for the offspring of a cross between pink
flower (PP) and a white flower (pp)?
= PP
DAD
= pp
MOM
Let’s sum it up…..
1st = Identify what letters are being used.
2nd = Assign the trait for each letter.
3rd = Match what letters are being used for each
parent/gender.
4th = Now fill in your Punnett Square.
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
Phenotypic Ratio:
4 long: 0 short
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
HW: Wizard Genetics
PG 75
Essential Question
How do I model the
predicted inheritance of
a single trait?
Human Pedigree – A Family Tree Project
PG 74
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!)
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 Six-Weeks/Semester.