The expression of antigen A or antigen B in red blood cells requires the help of an H antigen. A recessive mutation (h) that prevents the synthesis of the H antigen also prevents the expression of A and B antigens. This is called the Bombay effect. There is no ill effect in an individual with this mutation, but complications with blood transfusions or parental disputes may arise. b. Eva’s parents, John and Cher. Are both type AB. John questioned Cher’s fidelity when Eva turned out to be a type O. Assuming that Cher is indeed loyal to her husband, why did Eva turn out to be type O? Help Cher prove her innocence by showing the possible genotypes of John and Cher. Show also the COMPLETE cross that produced Eva.

The expression of antigen A or antigen B in red blood cells requires the help of an H antigen. A recessive mutation (h) that prevents the synthesis of the H antigen also prevents the expression of A and B antigens. This is called the Bombay effect. There is no ill effect in an individual with this mutation, but complications with blood transfusions or parental disputes may arise. b. Eva’s parents, John and Cher. Are both type AB. John questioned Cher’s fidelity when Eva turned out to be a type O. Assuming that Cher is indeed loyal to her husband, why did Eva turn out to be type O? Help Cher prove her innocence by showing the possible genotypes of John and Cher. Show also the COMPLETE cross that produced Eva.

Name: The expression of antigen A or antigen B in red blood cells requires t
Uploaded: 2024-03-20T06:42:55.000Z
Channel: Bartleby
Description: The expression of antigen A or antigen B in red blood cells requires the help of an H antigen. A recessive mutation (h) that prevents the synthesis of the H antigen also prevents the expression of A and B antigens. This is called the Bombay effect. T

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter19: Introduction To Genetics

Section: Chapter Questions

Problem 6CT: The ABO blood system has been used to settle cases of disputed paternity. Suppose, as a geneticist,...

See similar textbooks

Similar questions

The expression of antigen A or antigen B in red blood cells requires the help of an H antigen. A recessive mutation (h) that prevents the synthesis of the H antigen also prevents the expression of A and B antigens. This is called the Bombay effect. There is no ill effect in an individual with this mutation, but complications with blood transfusions or parental disputes may arise. a. Individuals with the Bombay genotype (hh) produce anti-H antigen. How can this be a problem during blood transfusion?
A representation of the distance between genes or genetic markers is called a?
a. Each person inherits one copy of the Huntington's Disease gene from each parent. Explain why the negative control sample (from an unaffected individual) only produced one band. b. Explain why the positive control sample (from an individual affected by Huntington’s disease) produced twobands.
For gain-of-function disorders, which of the following treatment strategies is the be . A. Gene augmentation B.Supply healthy cells . C.Supply normal form of proteins encoded by wild-type allele . D. Gene silencing
When the expression of alleles are affected by the presence of other genes,such as sickle cell trait carriers that experience symptoms, this is called
blood typing is often used as evidence in paternity cases in the court of law. In one case, the mother had a blood type a and the child had a blood type O. Is it possible for the father to have blood type AB? Explain your reasoning.
Jonah and Jana are siblings. Jonah has the genetic disorder cystic fibrosis, caused by inheriting one copy from each parent of a mutation in the CF gene. Jana does not have cystic fibrosis. Which of the following statements is/are true? (Select all that are true) a)Jana does not have the gene that when mutant causes cystic fibrosis. b)Jana has the gene that when mutant causes cystic fibrosis. c)Jana has two copies of the allele that causes cystic fibrosis. d)Jana does not have two copies of the allele that causes cystic fibrosis.
In humans, a dimple in the chin is a dominant characteristic controlled by a single gene.a. A man who does not have a chin dimple haschildren with a woman with a chin dimple whose mother lacked the dimple. What proportion of theirchildren would be expected to have a chin dimple?b. A man with a chin dimple and a woman who lacksthe dimple produce a child who lacks a dimple.What is the man’s genotype?c. A man with a chin dimple and a nondimpledwoman produce eight children, all having the chindimple. Can you be certain of the man’s genotype?Why or why not? What genotype is more likely,and why?
Achondroplasia is a form of dwarfism in humans. It is caused by a mutant allele of the fibroblast growth factor receptor 3 gene ( FGFR3) that produces an overactive protein. Having one copy of the mutant allele results in dwarfism. Two copies of the mutant allele results in death before birth. If a man with Achondroplasia marries a woman who is Sickle Cell Anemia carrier and they have a child together, what is the probability that their child will Achondroplasia AND be a Sickle Cell Anemia carrier? ½ 2/3 ¼ 1 ½ 1/16
Thoko’s father suffered a heart attack recently. He is 48 years old, does not exercise, is overweight and smokes ~30 cigarettes a day. As a fund manager, his job is stressful and he works extremely long hours. It is recognized that many complex, multifactorial conditions have both, an environmental and a genetic component. Based on the information provided, draw up/create a 1 page “health plan” for him to “reduce the environmental risk” for coronary heart disease
Traits like sickle cell anemia that are masked in the presence of the normal gene are said to be _______.Traits like hemophilia that are always expressed in the Male but may be hidden in the female are said to be ________.
Blood types in humans are Codominant. a. What are the possible genotypes of someone with type O blood? b. What are the possible genotypes of someone with type B blood? c. What is the phenotype of someone’s whose genotype is AO? d. A man with AB blood is married to a woman with AB blood. What blood types will their children be and in what proportion?