John and Sarah are contemplating having children, but both have a family hisotry of Tay Sach's...
John and Sarah are contemplating having children, but both have a family hisotry of Tay Sach's disease, which is lethal by the age of 2 or 3. John had a brother die of Tay Sach's and Sarah's great grandparents (on her father's side) had a daughter die of the disease. All other members of the family are healthy. What is the probability that John and Sarah's first child will be affected?
Homework Answers
john may have one allele of dominant lethal gene on recessive condition because his brother died so his brother have dominant homozygous lethal comdition while sara's aunty sister of her mother died by also dominant comdition so sara also may have a allele of lethal gene in recessive condition so if first child have both the lethal allele are combine so the first child will be die but in case of other combination child can only have lethal allele but not affected by that allele so the 25% chances to the first childf will be die.
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John and Sarah are contemplating having children, but both have
a family hisotry of Tay Sach's...
16.Tay-Sachs is an autosomal recessive disease. A couple (Jack & Jill) is worried about having a...
16.Tay-Sachs is an autosomal recessive disease. A couple (Jack & Jill) is worried about having a child that has Tay-Sachs because the man had a brother with the deadly disease. Since they wanted to have children, they sought the advice of a genetic counselor. During the course of the interview the sounselor determines that Jack's parents were not affected with Tay-Sachs, yet his brother had it. What is immediately known about the genotypes of the man's parents? Is the genotype...
Jack and his wife, Angela (27), have been referred to you by Angela’s gynecologist. Jack, a...
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You are a geneticist who has been approached by a family who suffers a mysterious disorder,...
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1. Tay-Sachs is an autosomal recessive disorder, which is the inability for infants to breakdown gangliosides in the CNS, which overtime build-up and destroy neurons. As the disease progresses, the ch...
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pedigree 8. The Addams family knows of three relatives who had Menkes disease, and X-linked recessive...
pedigree
8. The Addams family knows of three relatives who had Menkes disease, and X-linked recessive disorder in which a child does not grow, has brain degeneration, and dies by age two. Affected children have peculiar white stubby hair. Wanda Addams is hesitant about having children because her two sisters have each had sons who died from Menkes discase. Her mother had a brother who died of the condition, too. The pedigree for the family is shown below. A. Fill...
6. Tay-Sachs disease (TSD) is an inborn error of metabolism that results in death, usually by...
6. Tay-Sachs disease (TSD) is an inborn error of metabolism that results in death, usually by age two. You are a genetic counselor interviewing a phenotypically normal couple who tell you the male had a first cousin on his father's side who died from TSD and the female had a maternal uncle with TSD. There are no other known cases in either family, and there have been no consanguineous relationships. Assume this trait is very rare. a. Draw a pedigree...
Creating a pedigree chart from a family history and hypothesizing pattern of inheritance A family with...
Creating a pedigree chart from a family history and hypothesizing pattern of inheritance A family with a new disease caused by a mutant gene has been found. The family history has been collected and recorded. You will now create a pedigree chart from their family history and use the pedigree to predict the pattern of inheritance the disease follows. • Read the following family history: Patient 1 and Patient 2 visited a genetics counselor and provided their family histories. As...
Draw a pedigree for the following family. Carlos and Maria are married and have 3 normal...
Draw a pedigree for the following family. Carlos and Maria are married and have 3 normal children all boys. They are expecting a 4th child. Carlos has two normal brothers and an affected sister. Maria has an affected brother and a normal sister. Both of Carlos’ parents are normal, but his paternal grandfather is affected, and his maternal great grandmother is also affected. Maria’s mother is affected and her paternal grandfather is also affected. Part I is the drawing of...
Styles 6. Insert a picture of your pedigree chart for this family with genotypes filled in...
Styles 6. Insert a picture of your pedigree chart for this family with genotypes filled in here. 7. Which pattern of inheritance do you think the disease shows? Explain your reasoning. 8. Patient 1 and Patient 2 in the pedigree chart would like to know what the chances are that they will have a child with the disease. What do you tell them? Use a Punnett Square to show your work. Using Punnett Squares for human conditions and diseases The...
Use the information presented below to answer questions 6 - 8. Tay-Sachs disease is a recessive...
Use the information presented below to answer questions 6 - 8. Tay-Sachs disease is a recessive hereditary abnormality causing death within the first few years of life in individuals with the genotype tt. These individuals never reach sexual maturity. Individuals with the genotype T do not become diseased. Abnormally shortened fingers (brachyphalangy) are due to the presence of alleles in the heterozygous condition (Bb) located at a different locus. Geneticists observed that brachyphalangy was conveyed by the dominant allele and...
16.Tay-Sachs is an autosomal recessive disease. A couple (Jack & Jill) is worried about having a child that has Tay-Sachs because the man had a brother with the deadly disease. Since they wanted to have children, they sought the advice of a genetic counselor. During the course of the interview the sounselor determines that Jack's parents were not affected with Tay-Sachs, yet his brother had it. What is immediately known about the genotypes of the man's parents? Is the genotype...
pedigree
8. The Addams family knows of three relatives who had Menkes disease, and X-linked recessive disorder in which a child does not grow, has brain degeneration, and dies by age two. Affected children have peculiar white stubby hair. Wanda Addams is hesitant about having children because her two sisters have each had sons who died from Menkes discase. Her mother had a brother who died of the condition, too. The pedigree for the family is shown below. A. Fill...
6. Tay-Sachs disease (TSD) is an inborn error of metabolism that results in death, usually by age two. You are a genetic counselor interviewing a phenotypically normal couple who tell you the male had a first cousin on his father's side who died from TSD and the female had a maternal uncle with TSD. There are no other known cases in either family, and there have been no consanguineous relationships. Assume this trait is very rare. a. Draw a pedigree...
Creating a pedigree chart from a family history and hypothesizing pattern of inheritance A family with a new disease caused by a mutant gene has been found. The family history has been collected and recorded. You will now create a pedigree chart from their family history and use the pedigree to predict the pattern of inheritance the disease follows. • Read the following family history: Patient 1 and Patient 2 visited a genetics counselor and provided their family histories. As...
Styles 6. Insert a picture of your pedigree chart for this family with genotypes filled in here. 7. Which pattern of inheritance do you think the disease shows? Explain your reasoning. 8. Patient 1 and Patient 2 in the pedigree chart would like to know what the chances are that they will have a child with the disease. What do you tell them? Use a Punnett Square to show your work. Using Punnett Squares for human conditions and diseases The...
Use the information presented below to answer questions 6 - 8. Tay-Sachs disease is a recessive hereditary abnormality causing death within the first few years of life in individuals with the genotype tt. These individuals never reach sexual maturity. Individuals with the genotype T do not become diseased. Abnormally shortened fingers (brachyphalangy) are due to the presence of alleles in the heterozygous condition (Bb) located at a different locus. Geneticists observed that brachyphalangy was conveyed by the dominant allele and...
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