A woman has a history of cystic fibrosis in her family and found out that she has the gene for cystic fibrosis but is not affected by the gene. Her husband also has a history of cystic fibrosis in his family.
Dominant (F): normal; no cystic fibrosisRecessive (f): cystic
fibrosis
A woman has a history of cystic fibrosis in her family and found out that she has the gene for cystic fibrosis but is not affected by the gene. Her husband also has a history of cystic fibrosis in his family. He got tested yesterday and found that he is also a carrier for the disease but is not affected by it. First, list the genotype of the mother and father in Data Table 1. Then, draw a Punnett square for their offspring on a piece of paper. Be sure to include your name and the date with your drawing. Take a photo of the completed Punnett square and upload the image into Punnett Square 1.Scenario 2: Tay-Sachs
Dominant (T): normal; no Tay-Sachs
Recessive (t): Tay-Sachs
A man is a carrier for Tay-Sachs. He is going to have a child with a woman who has homozygous dominant genes. First, list the genotype of the mother and father in Data Table 2. Then, draw a Punnett square for their offspring on a piece of paper. Be sure to include your name and the date with your drawing. Take a photo of the completed Punnett square and upload the image into Punnett Square 2.Scenario 3: Huntington’s and Cystic Fibrosis
Dominant (H): Huntington’s disease Dominant (F): normal; no cystic fibrosis
Recessive (h): normal; no Huntington’s Recessive (f): cystic fribrosis
A man with a heterozygous genotype for Huntington’s disease is also a carrier for cystic fibrosis. His wife has cystic fibrosis but does not have Huntington’s disease. First, list the genotype of the mother and father in Data Table 3. Then, draw a Punnett square for their offspring on a piece of paper. Be sure to include your name and the date with your drawing. Take a photo of the completed Punnett square and upload the image into Punnett Square 3.Scenario 4: Color Blindness
X-linked dominant trait: no color blindness
X-linked recessive trait: color blindness
A color blind man marries a woman who is not color blind, nor is she a carrier for color blindness. First, list the genotype of the mother and father in Data Table 4. Then, draw a Punnett square for their offspring on a piece of paper. Be sure to include your name and the date with your drawing. Take a photo of the completed Punnett square and upload the image into Punnett Square 4.Scenario 1: Cystic Fibrosis
1. What is the percentage likelihood that the couple will have a child with cystic fibrosis?
2. What is the percentage likelihood that the couple will have a child that has the allele for cystic fibrosis?
3. If the parents have two children without the disorder, what is the probability that their third child will have cystic fibrosis?Scenario 2: Tay-Sachs
4. What is the percentage likelihood that the couple will have a child who has the phenotype for Tay-Sachs disease?
5. What is the percentage likelihood that the couple will have a child who is a carrier for Tay-Sachs disease?Scenario 3: Huntington’s and Cystic Fibrosis
6. What is the percentage likelihood that the couple will have a child who has both Huntington’s disease and cystic fibrosis?
7. What is the percentage likelihood that the couple will have a child who has neither Huntington’s disease nor cystic fibrosis?
8. What is the percentage likelihood that the couple will have a child who is a carrier for cystic fibrosis?Scenario 4: Color Blindness
9. What is the percentage likelihood that the couple will have a son who is also color blind?
Dominant (F): normal; no cystic fibrosisRecessive (f): cystic
fibrosis
A woman has a history of cystic fibrosis in her family and found out that she has the gene for cystic fibrosis but is not affected by the gene. Her husband also has a history of cystic fibrosis in his family. He got tested yesterday and found that he is also a carrier for the disease but is not affected by it. First, list the genotype of the mother and father in Data Table 1. Then, draw a Punnett square for their offspring on a piece of paper. Be sure to include your name and the date with your drawing. Take a photo of the completed Punnett square and upload the image into Punnett Square 1.Scenario 2: Tay-Sachs
Dominant (T): normal; no Tay-Sachs
Recessive (t): Tay-Sachs
A man is a carrier for Tay-Sachs. He is going to have a child with a woman who has homozygous dominant genes. First, list the genotype of the mother and father in Data Table 2. Then, draw a Punnett square for their offspring on a piece of paper. Be sure to include your name and the date with your drawing. Take a photo of the completed Punnett square and upload the image into Punnett Square 2.Scenario 3: Huntington’s and Cystic Fibrosis
Dominant (H): Huntington’s disease Dominant (F): normal; no cystic fibrosis
Recessive (h): normal; no Huntington’s Recessive (f): cystic fribrosis
A man with a heterozygous genotype for Huntington’s disease is also a carrier for cystic fibrosis. His wife has cystic fibrosis but does not have Huntington’s disease. First, list the genotype of the mother and father in Data Table 3. Then, draw a Punnett square for their offspring on a piece of paper. Be sure to include your name and the date with your drawing. Take a photo of the completed Punnett square and upload the image into Punnett Square 3.Scenario 4: Color Blindness
X-linked dominant trait: no color blindness
X-linked recessive trait: color blindness
A color blind man marries a woman who is not color blind, nor is she a carrier for color blindness. First, list the genotype of the mother and father in Data Table 4. Then, draw a Punnett square for their offspring on a piece of paper. Be sure to include your name and the date with your drawing. Take a photo of the completed Punnett square and upload the image into Punnett Square 4.Scenario 1: Cystic Fibrosis
1. What is the percentage likelihood that the couple will have a child with cystic fibrosis?
2. What is the percentage likelihood that the couple will have a child that has the allele for cystic fibrosis?
3. If the parents have two children without the disorder, what is the probability that their third child will have cystic fibrosis?Scenario 2: Tay-Sachs
4. What is the percentage likelihood that the couple will have a child who has the phenotype for Tay-Sachs disease?
5. What is the percentage likelihood that the couple will have a child who is a carrier for Tay-Sachs disease?Scenario 3: Huntington’s and Cystic Fibrosis
6. What is the percentage likelihood that the couple will have a child who has both Huntington’s disease and cystic fibrosis?
7. What is the percentage likelihood that the couple will have a child who has neither Huntington’s disease nor cystic fibrosis?
8. What is the percentage likelihood that the couple will have a child who is a carrier for cystic fibrosis?Scenario 4: Color Blindness
9. What is the percentage likelihood that the couple will have a son who is also color blind?
10. If the couple has a daughter, what is the percentage likelihood that the daughter will be a carrier for color blindness?
10. If the couple has a daughter, what is the percentage likelihood that the daughter will be a carrier for color blindness?
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