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Chapter 11 Note Packet
Name:
Johann Gregor Mendel Famous Person Graphic Organizer
Vision or Goal
What did this person see himself doing?
Actions
How did this person accomplish his goals?
Ideas
What ideas is this person famous for?
Communication
How did this person let everyone know
about his ideas?
Feelings
What did others think about this person? What
did he think about himself?
Travels
Achilles’ heel
Where was he born? Where did he live?
Where did he travel?
What were his weaknesses?
Timeline of Important Dates in his Life
1
Chapter 11 Note Packet
Name:
Chapter 11 – Introduction to Genetics
Section 11-1 – The Work of Gregor Mendel
1.
Define genetics.
1.
2.
What scientist’s work was particularly
important to our understanding of
inheritance?
2.
3.
What organism did Mendel use to
conduct his genetics experiments?
3.
4.
Define true- breeding.
4.
5.
Explain how Mendel would crosspollinate two pea plants.
5.
6.
Mendel studied 7 traits. Define traits.
6.
7.
What are hybrids?
7.
8.
What did Mendel’s F1 hybrid plants look
like? Did the parents’ traits blend?
8.
9.
What did Mendel say biological
inheritance is determined by?
9.
10.
What do scientists call these chemical
factors that determine traits?
10.
11.
Define alleles.
11.
12.
How many alleles were there for each
trait that Mendel studied?
12.
13.
What did Mendel call his different
generations of pea plants?
13.
14.
What does the principle of
dominance state?
14.
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Chapter 11 Note Packet
15.
When will an organism exhibit the
dominant allele?
15.
16.
When will an organism exhibit the
recessive allele?
16.
17.
When an organism produces the
gametes (egg and sperm), what happens
to the two alleles for each trait?
17.
18.
How many copies of each gene does a
gamete carry?
18.
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Chapter 11 Note Packet
Name:
Chapter 11 – Introduction to Genetics
Section 11-2 – Probability and Punnett Squares
1.
Define probability.
1.
2.
How is probability expressed?
2.
3.
Probability Example:
What is the probability that a coin will
land heads up?
3.
4.
How can we use probability to predict
traits?
4.
5.
What is a Punnett square?
5.
6.
How do we represent dominant alleles in
a genetic cross?
6.
7.
How do we represent recessive alleles
in a genetic cross?
7.
8.
Define homozygous.
8.
9.
Circle the choices that are examples of
homozygous dominant.
AA
Circle the choices that are examples of
homozygous recessive.
ee
Define heterozygous.
When will the dominant gene be
expressed?
Ff
KK
ee
qq
Rr
TT
HH
Oo
nn
Uu
ww
ii
Kk
9.
Circle the choices that are examples of
heterozygous.
10.
Gg
MM
Nn
dd
Ff
Gg
10.
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Chapter 11 Note Packet
Circle the choices that are examples
where the dominant gene will show.
11.
When will the recessive gene be
expressed?
AA
Dd
EE
ff
Jj
RR
aa
Gg
KK
Oo
PP
ss
Ss
11.
Circle the choices that are examples
where the recessive gene will show.
12.
Define phenotype. Give an example.
12.
13.
Define genotype. Give an example.
13.
tt
Practice making a Punnett square.
In guinea pigs, black coat color, B, is dominant to brown coat color, b. Show the genetic cross between a
black male, Bb, and a brown female, bb.
1. Make a key.
3. Show the Punnett square.
4. List the genotypes of the
offspring.
2. List the parents’ genotypes.
5. List the phenotypes of the
offspring.
Practice making a Punnett square.
In guinea pigs, black coat color, B, is dominant to brown coat color, b. Show the genetic cross between a
homozygous brown male and a homozygous black female.
1. Make a key.
3. Show the Punnett square.
4. List the genotypes of the
offspring.
2. List the parents’ genotypes.
5. List the phenotypes of the
offspring.
5
Chapter 11 Note Packet
Name:
Chapter 11 – Introduction to Genetics
Section 11-3 – Codominance and Multiple Alleles
1.
Is it true the some alleles are neither
dominant nor recessive?
1.
2.
Explain codominance.
2.
3.
What symbols do we use for
codominance?
3.
4.
Give an example of codominance.
4.
5.
Explain the phenotype that results
from each genotype. Ex. B = black and
W = white
5.
Practice making a Codominance Punnett square.
In chickens, black feathers (B) are codominant with white feathers (W). Show the genetic cross between
a black chicken and a speckled chicken.
1. Make a key.
3. Show the Punnett square.
4. List the genotypes of the
offspring.
2. List the parents’.
5. List the phenotypes of the
offspring.
6
Chapter 11 Note Packet
6.
Explain multiple alleles.
6.
7.
What symbols do we use for multiple
alleles?
7.
8.
Give an example of multiple alleles.
8.
9.
Explain the phenotype that results
from all ABO genotypic combinations.
Ex. IA, IB, i
9.
Practice making a Multiple Alleles Punnett square.
In humans, blood type is controlled by three alleles. Blood types A (I A) and B (IB) are dominant and blood
type O (i) is recessive. Show the genetic cross between a man that is blood type AB and a woman that is
homozygous for blood type A.
1. Make a key.
3. Show the Punnett square.
4. List the genotypes of the
offspring.
2. List the parents’ genotypes.
5. List the phenotypes of the
offspring.
7
Chapter 11 Note Packet
Name:
Chapter 11 – Introduction to Genetics
Section 11-3 – Incomplete Dominance, Polygenic Inheritance, and Environmental Influence
1.
Explain incomplete dominance.
1.
2.
What symbols do we use for incomplete
dominance?
2.
3.
Give an example of incomplete
dominance.
3.
4.
Explain the phenotype that results
from each genotype. Ex. R = red and
W = white
4.
Practice making an Incomplete Dominance Punnett square.
In snapdragons, red flower color (R) is incompletely dominant to white flower color (W). Show the genetic
cross between a red plant and a white plant.
1. Make a key.
3. Show the Punnett square.
4. List the genotypes of the
offspring.
2. List the parents’ genotypes.
5. List the phenotypes of the
offspring.
8
Chapter 11 Note Packet
5.
Explain polygenic inheritance.
5.
6.
What is the result of polygenic
inheritance?
6.
7.
Give examples of traits that are
polygenic.
7.
8.
What role does the environment have in
determining how genes are expressed?
8.
9