Human Heredity: Principles and Issues (MindTap Course List)
11th Edition
ISBN: 9781305251052
Author: Michael Cummings
Publisher: Cengage Learning
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Chapter 18, Problem 15QP
Summary Introduction
To determine: The genetic nature of a bipolar disorder.
Introduction: A bipolar disorder (manic-depressive disorder) is a type of mental illness which affects a number of human beings per year. This condition occurs during the adolescence or in the second and third decades of life.
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Chapter 18 Solutions
Human Heredity: Principles and Issues (MindTap Course List)
Ch. 18.2 - What role would twin and adoption studies play in...Ch. 18.2 - Prob. 2EGCh. 18 - Why do you think it has been so difficult to...Ch. 18 - If a test were available that could tell you...Ch. 18 - Prob. 1QPCh. 18 - Prob. 2QPCh. 18 - Prob. 3QPCh. 18 - List the steps involved in transmitting a nerve...Ch. 18 - Why do neurotransmitters have to be removed from...Ch. 18 - Prob. 6QP
Ch. 18 - Perfect pitch is the ability to identify a note...Ch. 18 - Prob. 8QPCh. 18 - Name three genes whose mutations lead to an...Ch. 18 - Prob. 10QPCh. 18 - Prob. 11QPCh. 18 - Animal Models: The Search for Behavior Genes You...Ch. 18 - Prob. 13QPCh. 18 - A pedigree analysis was performed on the family of...Ch. 18 - Prob. 15QPCh. 18 - A region on chromosome 6 has been linked to...Ch. 18 - Genetics and Social Behavior Of the following...Ch. 18 - Prob. 18QPCh. 18 - Prob. 19QP
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- Bloom Syndrome Bloom syndrome is a rare genetic disorder. It is characterized by a short stature and a long narrow face with prominent nose and ears. There is also an increased sensitivity to light. People who have the disorder often develop rashes on their face, forearms, and hands when they have been exposed to the sun. In addition, these people often suffer from chronic obstructive pulmonary disorder (COPD) and have a higher chance of developing cancer. The cause of this genetic disorder is a mutation in the BLM gene located on chromosome 15. The immediate effect of this mutation is that there is a defect in the functioning of the DNA helicase enzyme. The location of this gene on the chromosome is indicated above (yellow arrow). What is the effect of this mutation on DNA replication? What stage of the cell cycle would be most affected?arrow_forwardChoose only one option:arrow_forwardanswer all questions please.arrow_forward
- Homozygosity for extremely rare mutations in a humangene called SCN9A cause complete insensitivity topain (congenital pain insensitivity or CPA) and a totallack of the sense of smell (anosmia). The SCN9A geneencodes a sodium channel protein required for transmission of electrical signals from particular nerves inthe body to the brain. The failure to feel pain is a dangerous condition as people cannot sense injuries.The SCN9A gene has 26 exons and encodes a1977-amino acid polypeptide. Consanguineous matings in three different families have resulted in individuals with CPA/anosmia. In Family 1, a G-to-Atransition in exon 15 results in a truncated protein that is898 amino acids long; in Family 2, deletion of a singlebase results in a 766-amino acid polypeptide; and inFamily 3, a C-to-G transversion in exon 10 yields a458-amino acid protein.a. Hypothesize as to how each of the three SCN9Amutations affects gene structure: Why are truncatedproteins made in each case? b. How would you…arrow_forwardThe Xb locus on Alouatta genus, the howler monkey X chromosome has 2 alleles, b+ and b. The b+ allele causes the presence of the Xb surface protein on their granulocyte cells, while the recessive allele b which does not allow the antigen to appear. The Xb locus is at 15 centimorgans, from the GRG locus. The GRG locus produces a normal enzyme activity. Individual howler monkeys with one form of an eye condition have the grg/grg genotype, with the males grg/Y presenting the condition. A male howler monkey with the eye condition caused by this enzyme mutation and no Xb antigen has a normal female howler monkey daughter with Xb antigen. This howler monkey female daughter is expecting a little howler monkey from the mating from a male howler monkey from a different tree. A) Determine the genotype of the howler monkey daughter, from the problem. B) Determine the types and percentages of each gametes in oogenesis produced of the howler monkey daughter female, based on the map distance given.…arrow_forwardWhy do you think it has been so difficult to identify genes underlying schizophrenia? Rachel asked to see a genetic counselor because she was concerned about developing schizophrenia. Her mother and maternal grandmother both had schizophrenia and were institutionalized for most of their adult lives. Rachels three maternal aunts are all in their 60s and have not shown any signs of this disease. Rachels father is alive and healthy, and his family history does not suggest any behavioral or genetic conditions. The genetic counselor discussed the multifactorial nature of schizophrenia and explained that many candidate genes have been identified that may be mutated in individuals with the condition. However, a genetic test is not available for presymptomatic testing. The counselor explained that based on Rachels family history and her relatedness to individuals who have schizophrenia, her risk of developing it is approximately 13%. If an altered gene is in the family and her mother carries the gene, Rachel has a 50% chance of inheriting it.arrow_forward
- A region on chromosome 6 has been linked to schizophrenia, but researchers have not found a specific gene associated with this disease. What steps would be necessary to locate the gene?arrow_forwardSickle cell disease— what is the background of this disorder: include the name of the disorder, any alternate names used, provide a description of the disorder, and the typical age of onset. What is the Type of genetic disorder: explain if and how this disorder is inherited. Explain the genetic causes of the disorder. Is it inherited? Is the disorder a dominant or recessive trait? Which chromosome is affected in this disorder? Is a gene mutated? If so, name the gene that is affected? How is gene expression impacted (is it a particular type of mutation, a case of a misshapen protein, etc.?)arrow_forwardDiscuss at least three of the disorders of focusing. What is the complete epigenetic origin which should include the genetic/biological origin and the environment influence related to these disorders of focusing.arrow_forward
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