Download PPT_Codominance.BloodType.11.16.11 copy

CATALYST
The CATALYST is to be done independently and silently. TIME REMAINING:
8:00 MINUTES
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
The CATALYST is to be done independently and silently. TIME REMAINING:
7:00 MINUTES
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
The CATALYST is to be done independently and silently. TIME REMAINING:
6:00 MINUTES
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
The CATALYST is to be done independently and silently. TIME REMAINING:
5:00 MINUTES
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
The CATALYST is to be done independently and silently. TIME REMAINING:
4:00 MINUTES
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
The CATALYST is to be done independently and silently. TIME REMAINING:
3:00 MINUTES
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
The CATALYST is to be done independently and silently. TIME REMAINING:
2:00 MINUTES
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
The CATALYST is to be done independently and silently. TIME REMAINING:
1:00 MINUTES
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
Silently and on your own, complete the task below
When you are finished, put your pencil down and look up. Remain silent to allow others to finish.
Answer the following questions:
2.
3.
Chromosomes are made up of which macromolecule?
A.
proteins
B.
nucleic acids
C.
amino acids
D.
carbohydrates
Body cells are also known as:
A.
gametes
B.
somatic cells
C.
stem cells
D.
prokaryotes
TIME REMAINING:
2:00 MINUTES
CATALYST
Silently and on your own, complete the task below
When you are finished, put your pencil down and look up. Remain silent to allow others to finish.
Answer the following questions:
2.
3.
Chromosomes are made up of which macromolecule?
A.
proteins
B.
nucleic acids
C.
amino acids
D.
carbohydrates
Body cells are also known as:
A.
gametes
B.
somatic cells
C.
stem cells
D.
prokaryotes
TIME REMAINING:
1:00 MINUTES
CATALYST
The CATALYST is to be done independently and silently.
Answer the following questions in your notebook:
1. Attached ears are dominant to unattached ears. If a
man homozygous for attached ears has children with a
woman who is a carrier for unattached ears, what is the
chance that they will have kids who are carriers for
unattached ears?
Step 1: Which allele is dominant?
Step 2: Draw a genotype/phenotype table for the
problem above
Step 3: Write the genotypes of the parents in the
problem above
Step 4: Set up and solve the Punnett square.
CATALYST
Silently and on your own, complete the task below
When you are finished, put your pencil down and look up. Remain silent to allow others to finish.
Answer the following questions:
2.
3.
Chromosomes are made up of which macromolecule?
A.
proteins
B.
nucleic acids
C.
amino acids
D.
carbohydrates
Body cells are also known as:
A.
gametes
B.
somatic cells
C.
stem cells
D.
prokaryotes
November 2010
http://www.chicagotribune.com/health/women/la-heb-act-stem-cell-trial20101122,0,4343796.story
Vocabulary Review:
Vocabulary Review
Trait: A characteristic (what you look like)
Gene: A piece of DNA that controls a trait
Allele: Version (type) of a gene
Vocabulary Review
Genotype: your genes for a trait
Phenotype: your trait
Dominant: ALWAYS shown (capital letter)
Recessive: only shown with another recessive
(lowercase letter)
Vocabulary Review
Heterozygous: two different alleles
(Bb)
Homozygous: two of the same allele
(BB, bb)
Codominance
Codominance Notes
In codominance, there is
more than one dominant
allele. This means that if
someone gets two
dominant alleles they will
express or show both
phenotypes.
Codominance Notes
An example of this is in the Roan
cows. In a certain type of cow,
they can either be Red (R) or
White (W). However, some cows
have both dominant alleles and
are BOTH red and white. We call
these cows Roan.
2 roan cows have children. What is
the chance that their offspring will be
roan?
Step 1: Write down dominant allele
R = Red
W= White
2 roan cows have children. What is the
chance that their offspring will be roan?
Step 2: Make a genotype/phenotype
table for the problem
Genotype
Phenotype
RR
Red
RW
Roan
WW
White
Term
Homozygous
Red
Heterozygous
(Roan)
Homozygous
White
2 roan cows have children. What is the
chance that their offspring will be roan?
Step 3: Read problem and write down
genotypes of the parents
Parents: RW X RW
2 roan cows have children. What is the
chance that their offspring will be roan?
Step 4: Solve the Punnett Square
R
W
R
RR RW
W
RW WW
Parents: RW X RW
2 roan cows have children. What is the
chance that their offspring will be roan?
Step 5: Identify the
question and use the
genotype/phenotype
ratios to solve
2 roan cows have children. What is the
chance that their offspring will be roan?
Step 5: Identify the question and use the
genotype/phenotype ratios to solve
RR
1/4 or 25%
RW
2/4 or 50%
WW
1/4 or 25%
R
W
R
RR RW
W
RW WW
Parents: RW X RW
Codominance Practice
Problem
A farmer wants to breed his cows.
He knows that white hair (W) is
codominant with red hair (R). He
has a red cow and a white cow.
What percent of the offspring will
be red?
Blood Types
Another example of codominance is
blood types of people. Here we
have a recessive allele along with
2 types of dominant alleles.
The 3 alleles are codominant. So
if someone gets just one kind of
dominant allele, they will show
one of the phenotypes. BUT, if
they get both dominant alleles,
they will show both phenotypes.
A man that is heterozygous for A blood and a
woman that is heterozygous for B blood have
children. What is the chance they will have a child
with O blood?
Step 1: Write down dominant alleles
A
I
= Type A
B
I = Type B
i = Type O
Phenotype
AGenotype
man that is heterozygous
for A blood and Term
a woman
that is heterozygous for B blood have children. What is
the chance they will have a child with
O blood?
Homozygous
IAIA
Type A
I i
Type A
IBIB
Type B
IBi
Type B
IAIB
Type AB
Step 2: Make a genotype/phenotype
Type A
table
for
the
problem
Heterozygous
A
Type A
Homozygous
Type B
Heterozygous
Type B
Heterozygous
Type AB
Homozygous
A man that is heterozygous for A blood and a woman
that is heterozygous for B blood have children. What is
the chance they will have a child with O blood?
Step 3: Read problem and write down
genotypes of the parents
Parents:
A
I i
X
B
I i
A man that is heterozygous for A blood and a woman
that is heterozygous for B blood have children. What is
the chance they will have a child with O blood?
Step 4: Solve the Punnett Square!
Blood Types
Universal Donor: OUniversal Recipient: AB+
EXIT TICKET
Codominance
Practice Problem
A man with homozygous blood
type B and a woman with
heterozygous type A blood have
children. What are the probable
percent genotypes of their
children?