CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

TIME REMAINING:TIME REMAINING:8:00 8:00 MINUTESMINUTES

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

TIME REMAINING:TIME REMAINING:7:00 7:00 MINUTESMINUTES

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

TIME REMAINING:TIME REMAINING:6:00 6:00 MINUTESMINUTES

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

TIME REMAINING:TIME REMAINING:5:00 5:00 MINUTESMINUTES

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

TIME REMAINING:TIME REMAINING:4:00 4:00 MINUTESMINUTES

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

TIME REMAINING:TIME REMAINING:3:00 3:00 MINUTESMINUTES

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

TIME REMAINING:TIME REMAINING:2:00 2:00 MINUTESMINUTES

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

TIME REMAINING:TIME REMAINING:1:00 1:00 MINUTESMINUTES

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

CATALYSTCATALYSTSilently and on your own, complete the task below

2. Hemophilia is a sex-linked trait carried on the x chromosome. A female with hemophilia has children with a normal male. What percent of the males will present with hemophilia?

A. 50%

B. 25%

C. 100%

D. 0%

3. Which of the following accurate describes half of a replicated chromosome?

• chromosome

• chromatin

2. sister chromatid

A. sex-linked trait

TIME REMAINING:TIME REMAINING:2:00 2:00 MINUTESMINUTES

CATALYSTCATALYST

TIME REMAINING:TIME REMAINING:1:00 1:00 MINUTESMINUTES

Silently and on your own, complete the task below

2.Hemophilia is a sex-linked trait carried on the x chromosome. A female with hemophilia has children with a normal male. What percent of the males will present with hemophilia?

A. 50%

B. 25%

C. 100%

D. 0%

3.Which of the following accurate describes half of a replicated chromosome?

A. chromosome

B. chromatin

C. sister chromatid

D. sex-linked trait

CATALYSTCATALYSTThe CATALYST is to be done independently and silently.

Answer the following questions in your notebook:

1. A man wants to investigate the wing shape of a mockingjay. Feather color shows incomplete dominance between red and blue. If a purple mockingjay and a red mockingjay are crossed, what is the change the offspring will be blue?

Step 1: list the dominant and recessive allelesStep 2: complete the phenotype/genotype table Step 3: Parents: _________ X _________Step 4: Punnett squareStep 5: What is the question asking?

Silently and on your own, complete the task below

2.Hemophilia is a sex-linked trait carried on the x chromosome. A female with hemophilia has children with a normal male. What percent of the males will present with hemophilia?

A. 50%

B. 25%

C. 100%

D. 0%

3.Which of the following accurate describes half of a replicated chromosome?

A. chromosome

B. chromatin

C. sister chromatid

D. sex-linked trait

CATALYSTCATALYST

KaryotypesKaryotypes

KaryotypesKaryotypes

• Humans have 46 chromosomes in normal body cells

• Karyotypes show chromosomes in pairs lined up from biggest to smallest

•Karyotypes can tell us sex and chromosomal diseases like Down’s syndrome

KaryotypesKaryotypes

chromosome

Karyotype

•Sex/gender is determined by sex chromosomes (X and Y)

•XX: female

•XY: male

KaryotypesKaryotypes

• Having the wrong number of chromosomes gives you a

• Down’s syndrome = trisomy 21 =

• Down’s syndrome is caused by

diseaseAn extra 21st chromosome

nondisjunction

KaryotypesKaryotypes

• Nondisjunction = chromosomes don’t separate when the egg or sperm is made, so there is the wrong number of chromosomes

PracticePracticeWhat disease does this person have?

What caused this disease?

PracticePractice

What sex is this person?PracticePractice

What sex is this person?

PracticePractice

Genetic DisordersGenetic Disorders

Down’s SyndromeDown’s Syndrome

Triple X Syndrome (notes)Triple X Syndrome (notes)

• Triple X Syndrome = females with an extra X chromosome (XXX)

Klinefelter's Syndrome

• Man with an extra X. (XXY)

• The principal effect is reduced fertility

Turner’s SyndromeTurner’s Syndrome• Female with only one X chromsome

(X)

• Sterile, overweight

Think: Karyotypes

• What chromosomal combinations produces a male? Female?

• How many chromosomes are found in a typical human cell?

• Down’s syndrome patients have ___x copies of chromosomes 21.

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?

Genetics Practice Genetics Practice Problem RECAPProblem RECAP

EXIT TICKETEXIT

TICKET

EXIT TICKETEXIT TICKETNormal, 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?

1

EXIT TICKETEXIT TICKETNormal, 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?

2

EXIT TICKETEXIT TICKETNormal, 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 IBi blood marries a woman with the blood genotype IAi. What is the chance they will have a child with type A blood?

3

EXIT TICKETEXIT TICKETNormal, 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 color-blind man marries a woman who is homozygous dominant. If they have a boy, what are the chances that he will be color-blind?

4