Download PPT_Incomplete.11.29.11 copy

CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
TIME REMAINING:
8:00 MINUTES
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
TIME REMAINING:
7:00 MINUTES
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
TIME REMAINING:
6:00 MINUTES
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
TIME REMAINING:
5:00 MINUTES
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
TIME REMAINING:
4:00 MINUTES
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
TIME REMAINING:
3:00 MINUTES
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
TIME REMAINING:
2:00 MINUTES
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
TIME REMAINING:
1:00 MINUTES
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
Silently and on your own, complete the task below
2. Color-blindness is a sex-linked trait carried on the x chromosome. A carrier
female has children with a colorblind male. What percent of the children will
be color blind?
A. 50%
B. 25%
C. 100%
TIME REMAINING:
2:00 MINUTES
D. 0%
3. Two cell divisions in mitosis results in the production of how many daughter
cells?
A. 2 identical daughter cells
B. 4 identical daughter cells
C. 2 different daughter cells
CATALYST
Silently and on your own, complete the task below
2.Color-blindness is a sex-linked trait carried on the x chromosome. A
carrier female has children with a colorblind male. What percent of the
children will be color blind?
A. 50%
B. 25%
C. 100%
TIME REMAINING:
1:00 MINUTES
D. 0%
3.Two cell divisions in mitosis results in the production of how many
daughter cells?
A. 2 identical daughter cells
B. 4 identical daughter cells
C. 2 different daughter cells
CATALYST
he CATALYST is to be done independently and silently.
nswer the following questions in your notebook:
1. Cats can be either white, black, or black and
white. A black and white cat mates with a white
cat. What percent of the offspring will be white?
Step 1: list the dominant and recessive alleles
Step 2: complete the phenotype/genotype table
Step 3: Parents: _________ X _________
Step 4: Punnett square
Step 5: What is the question asking?
CATALYST
Silently and on your own, complete the task below
2.Color-blindness is a sex-linked trait carried on the x chromosome. A
carrier female has children with a colorblind male. What percent of the
children will be color blind?
A. 50%
B. 25%
C. 100%
D. 0%
3.Two cell divisions in mitosis results in the production of how many
daughter cells?
A. 2 identical daughter cells
B. 4 identical daughter cells
C. 2 different daughter cells
Genotype
Phenotype
Term
Example: color blindness (c) is a recessive trait carried
on the X
chromosome
Homozygous
Normal
XCXC
Woman
Dominant
Step 2: Make a genotype/phenotype table
for the
Heterozygous
Carrier
problem
C
c
X X
Woman
Carrier
Homozygous
Colorblind
XcXc
Woman
Recessive
Heterozygous
C
X Y
Normal Man
Dominant
Heterozygous
Colorblind
c
XY
Man
Recessive
YY
Not Possible
N/A
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)
Chromosomes
autosome
vs.
sex chromosome
Incomplete Dominance
Incomplete dominance: there is no
dominant allele; having both alleles
gives you a blend of the trait
Incomplete dominance = blending of traits
Think: What is the difference
between codominance and
incomplete dominance?
Codominance: both traits shown
(red and white spotted)
Incomplete dominance: blend
(pink)
This is different from codominance
because in codominance we see both
phenotypes separately, while in
incomplete dominance we see them
blended together.
Example: snapdragon flower color:
RR = red
Rr = pink
rr = white
Normal, codominance,
incomplete or sex linked?
In humans, brown eyes
are dominant to blue
eyes
A
B
I I
produces type AB
blood:
Snapdragons can be
red, white or pink
Color blindness is carried
on the x chromosome
The genotype Rr produces
a roan cow:
Red flowers are dominant
to white flowers:
5 Step Method
Step 1: write which allele is dominant
Step 2: draw a genotype/phenotype table
Step 3: find the genotypes of the parents
Step 4: set up and solve the Punnett
square
Step 5: find what the question is asking
Flower color for the mirabilis plant is controlled by incomplete
dominance. Flowers are either red, white or pink. What are
the probable genotypes and phenotypes for a cross of a
homozygous red plant and a pink plant?
Step 1: what allele is dominant?
This trait shows incomplete dominance!
R = Red
r = White
Flower color for the mirabilis plant is controlled by incomplete
dominance. Flowers are either red, white or pink. What are
the probable genotypes and phenotypes for a cross of a
homozygous red plant and a pink plant?
Step 2: draw a genotype/phenotype table:
Genotype
Phenotype
RR
Red
Rr
Pink
rr
White
Flower color for the mirabilis plant is controlled by incomplete
dominance. Flowers are either red, white or pink. What are
the probable genotypes and phenotypes for a cross of a
homozygous red plant and a pink plant?
Step 3: find the genotypes
of the parents:
RR x Rr
Genotype
Phenotype
RR
Red
Rr
Pink
rr
White
Flower color for the mirabilis plant is controlled by incomplete
dominance. Flowers are either red, white or pink. What are
the probable genotypes and phenotypes for a cross of a
homozygous red plant and a pink plant?
Step 4: set up and solve the Punnett square:
R
R
R RR RR
r
Rr
Rr
RR x Rr
R
50%
R
50%
Rr
Red Flower 50%
Pink flower 50%
Flower color for the mirabilis plant is controlled by incomplete
dominance. Flowers are either red, white or pink. What
What are
are
the
and
phenotypes
for for
a cross
of a of a
the probable
probablegenotypes
genotypes
and
phenotypes
a cross
homozygous
and
a pink
plant?
homozygousred
redplant
plant
and
a pink
plant?
Step 5: find what the question is asking:
R
R
R RR RR
RR x Rr
RR 50%
Rr 50%
Red Flower 50%
r
Rr
Rr
Pink flower 50%
Practice Problem
A man wants to investigate plant
height using pea plants: His pea
plants come in only 3 heights. He
has tall plants (TT), short plant (tt)
and medium plants (Tt). What are
the probable genotypes and
phenotypes?
EXIT
TICKET
1
EXIT
TICKET
Normal, Sex-Linked & Codominance Practice:
Solve the following problems using Punnett
squares. In step 1, make sure to figure out whether
it is a normal problem, a sex-linked problem or a
codominance problem!
•In pigs, pointy ears (P) are
dominant to round ears, (p). A pig
with round ears is crossed with a
heterozygous pig. What are the
chances that they have a pig with
round ears?
2
EXIT TICKET
Normal, Sex-Linked & Codominance Practice:
Solve the following problems using Punnett
squares. In step 1, make sure to figure out
whether it is a normal problem, a sex-linked
problem or a codominance problem!
•A red cow (RR) mates with a roan
cow (RW). What is the probability
that they will produce a roan cow?
3
EXIT TICKET
Normal, Sex-Linked & Codominance Practice:
Solve the following problems using Punnett
squares. In step 1, make sure to figure out whether
it is a normal problem, a sex-linked problem or a
codominance problem!
•A man with the blood genotype
B
I i
blood marries a woman with the
A
blood genotype I i. What is the
chance they will have a child with
type A blood?
4
EXIT TICKET
Normal, Sex-Linked & Codominance Practice:
Solve the following problems using Punnett squares.
In step 1, make sure to figure out whether it is a normal
problem, a sex-linked problem or a codominance
problem!
•Color-blindness is a recessive trait
carried on the x chromosome. A colorblind man marries a woman who is
homozygous dominant. If they have a
boy, what are the chances that he will
be color-blind?