Biology: The Unity and Diversity of Life (MindTap Course List)
14th Edition
ISBN: 9781305073951
Author: Cecie Starr, Ralph Taggart, Christine Evers, Lisa Starr
Publisher: Cengage Learning
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Chapter 13, Problem 11GP
A single allele gives rise to the Hbs form of hemoglobin. Individuals who are homozygous for the allele (HbS/HbS) develop sickle-cell anemia (Section 9.6). Heterozygous individuals (HbA/HbS) have few symptoms. A couple who are both heterozygous for the HbS allele plan to have children. For each of the pregnancies, state the probability that they will have a child who is:
- a. homozygous for the HbS allele
- b. homozygous for the normal allele (HbA)
- c. heterozygous: HbA/HbS
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Chapter 13 Solutions
Biology: The Unity and Diversity of Life (MindTap Course List)
Ch. 13 - A heterozygous individual has a _______ for a...Ch. 13 - An organisms observable traits constitute its...Ch. 13 - Prob. 3SQCh. 13 - The second-generation offspring of a cross between...Ch. 13 - Prob. 5SQCh. 13 - Refer to question 5. Assuming complete dominance,...Ch. 13 - Prob. 7SQCh. 13 - Prob. 8SQCh. 13 - The probability of a crossover occurring between...Ch. 13 - True or false? All traits are inherited in a...
Ch. 13 - Prob. 11SQCh. 13 - The phenotype of individuals heterozygous for...Ch. 13 - Prob. 13SQCh. 13 - Match the terms with the best description. ______...Ch. 13 - Assuming that independent assortment occurs during...Ch. 13 - Refer to problem 2. Determine the predicted...Ch. 13 - Refer to problem 2. Assume a third gene has...Ch. 13 - Prob. 4GPCh. 13 - Suppose you identify a new gene in mice. One of...Ch. 13 - Mendel crossed a true-breeding pea plant with...Ch. 13 - Several alleles affect traits of roses, such as...Ch. 13 - Prob. 1DAACh. 13 - Prob. 2DAACh. 13 - Prob. 3DAACh. 13 - Mutations in the TYR gene may render its enzyme...Ch. 13 - In sweet pea plants, an allele for purple flowers....Ch. 13 - Red-flowering snapdragons are homozygous for...Ch. 13 - A single allele gives rise to the Hbs form of...
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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.Similar questions
- Hemophilia A, a condition in which blood does not clot properly, is a recessive trait located on the X chromosome (Xh). A woman heterozygous for the trait marries a normal male. What is the probability that this couple will have hemophiliac daughters? What is the probability that this couple will have hemophiliac sons?arrow_forwardA man with hemophilia has a daughter of normal phenotype. She marries a man who is normal for the trait. The probability of their son to be a hemophiliac is 1/4. Its true or false? Explain.arrow_forwardA form of hemophilia is caused by a sex-linked (X-linked) recessive gene. A phenotypically normal woman whose father had hemophilia marries a man who suffers with hemophilia. What is the probability that their first daughter will have hemophilia?arrow_forward
- A man of unknown genotype has type B blood, his wife has type A blood (also unknown genotype). List ALL the blood types possible for their children.arrow_forwardIf two individuals with blood type AB marry, what are the odds that each of their children will have the AB blood type? Draw a Punnett square to answer the question. A father and mother have the following blood types, AO and BB, respectively. Create a Punnett square to determine the possible blood types that their children might have. a. What are the possible blood types of the children? b. Which parent could donate blood to any of the children?arrow_forwardThe following is a summary of the possible sickle-cell genotypes and phenotypes: AA - cojmpletely normal AS - sickle-cell trait (this person has a combination of normal hemoglobin and the abnormal, sickled form of hemoglobin) SS - sickle-cell anemia (all abnormal hemoglobin) Make a punnett square for help answering the question: What is the probability of a couple having a child with sickle-cell trait if one parent is normal and the other has sickle-cell trait?arrow_forward
- Explain the differences between an individual homozygous for the sickle hemoglobin allele (HbS/HbS) and one who is heterozygous (HbA/HbS). Consider the hemoglobin molecule, cells, and disease.arrow_forwardHemophilia is a blood disorder which is sex-linked. A woman carrier has children with a normal man. Determine the chances for girls and boys with hemophilia. [Remember that females have the XX genotype and males have the XY genotype. Do not place an allele on the Y chromosome. Example: XN Xn for female; Xn Y for male]arrow_forwardA male with B blood and a female with O blood are expecting a child together. Determine all possible blood types for their offspring. Drawing Punnett squares (2 X 2) as you do this will help. (Remember that blood types A and B can have 2 different genotypes and you need to take this into account in setting up your Punnett squares.) Possible ABO blood types:______________________ If both of these individuals have Rh+ blood, is there any way they could produce a child with Rh- blood? (Be sure to consider the genotypes for Rh + individuals.) Explain your answer.arrow_forward
- A couple are both phenotypically normal but their son suffers from hemophilla, a sex linked recessive disorder. What fraction of their children are likely to suffer from hemophilia. what fraction are likely to be carriers.arrow_forwardSuppose a woman who is a carrier of sickle-cell trait (making her a heterozygote) has children with a man who is totally healthy and does not carry the gene for sickle-cell trait at all. Which one of the following is true about their potential children? (Draw a Punnett square on scratch paper if it helps you.) A) None of their children will have sickle-cell disease. B) All of their children will have sickle-cell disease. C) All of the couple's children would be heterozygous carriers like the mother.arrow_forwardSickle cell anemia is an inheritable red blood cell disorder that results in sickle-shaped red blood cells. The sickle-shaped red blood cells can stick to blood vessel walls and cause a blockage or slow the movement of blood throughout the body. Individuals who are heterozygous produce both normal and sickle-shaped red blood cells which gives them resistance to malaria but they do not develop sickle cell anemia (so heterozygotes are unaffected on the pedigree).Let HbS be the allele for sickle cell anemia and let HbA be the allele for normal red blood cells. Which of the following rows provides the correct genotypes for individuals I-2, I-4, II-1, and III-1? Select one: a. I-2 I-4 II-1 III-1 HbA_ HbAHbS HbAHbS HbA_ b. I-2 I-4 II-1 III-1 HbA_ HbAHbS HbAHbS HbAHbS c. I-2 I-4 II-1 III-1 HbAHbS HbAHbS HbAHbS HbAHbS d. I-2 I-4 II-1 III-1 HbAHbA HbAHbA HbAHbA HbAHbAarrow_forward
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