Inquiry Into Life
15th Edition
ISBN: 9781260177671
Author: Mader, Sylvia S., Windelspecht, Michael
Publisher: Mcgraw-hill Education,
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Chapter 23, Problem 2TC
How would you determine whether a disease in humans is simply polygenic or and environmental influence?
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Why are recessive conditions more common than dominant ones? How could being a carrier of a recessive disease be beneficial?
Recessive genetic disorders are more frequent than disorders inherited as dominant because :
a) carriers are not eliminated by the disease before reproduction
b ) people carrying dominant genetic disorders always die before birth
c ) dominant genetic disorders are never expressed in males
e ) recessive genetic disorders are limited to persons of the same ethnicity
Why are most genetic diseases caused by recessive alleles?
Chapter 23 Solutions
Inquiry Into Life
Ch. 23.1 - Describe how Mendel's law of segregation and law...Ch. 23.1 - Define the term allele, and explain what it means...Ch. 23.1 - Contrast genotype and phenotype, and use...Ch. 23.1 - Predict outcome ratios and probabilities for...Ch. 23.1 - Prob. 1QTCCh. 23.1 - 2. Decide the reasons listed in the feature, what...Ch. 23.1 - Prob. 3QTCCh. 23.1 - Distinguish between the terms genotype and...Ch. 23.1 - Explain the purpose of testcross.Ch. 23.1 - Prob. 3CYP
Ch. 23.1 - Describe the types of process that result in a 3:1...Ch. 23.1 - The law of segregation states all of the following...Ch. 23.1 - Prob. 2ACh. 23.1 - Prob. 3ACh. 23.1 - Prob. 4ACh. 23.1 - Prob. 5ACh. 23.1 - Prob. 6ACh. 23.2 - Recognize autosomal dominant and autosomal...Ch. 23.2 - Analyze pedigree to determine the probability of a...Ch. 23.2 - Describe the characteristics of a Pedigree for an...Ch. 23.2 - Prob. 2CYPCh. 23.2 - Which of the following does not have an autosomal...Ch. 23.2 - 8. Which of the following does not describe the...Ch. 23.3 - Prob. 1LOCh. 23.3 - Prob. 2LOCh. 23.3 - Describe polygenic inheritance.Ch. 23.3 - Prob. 1QTCCh. 23.3 - Prob. 2QTCCh. 23.3 - Prob. 1CYPCh. 23.3 - Prob. 2CYPCh. 23.3 - Prob. 9ACh. 23.3 - Prob. 10ACh. 23.3 - Prob. 11ACh. 23.4 - Prob. 1LOCh. 23.4 - Understand how scientists determine the effect of...Ch. 23.4 - Prob. 1CYPCh. 23.4 - Prob. 2CYPCh. 23.4 - Prob. 12ACh. 23 - Prob. C2BYBCh. 23 - Prob. S5.4BYBCh. 23 - Prob. S5.6BYBCh. 23 - Prob. 1CSCh. 23 - Prob. 2CSCh. 23 - Prob. 3CSCh. 23 - Prob. 1TCCh. 23 - How would you determine whether a disease in...Ch. 23 - Prob. 3TC
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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
- Do people look differently upon those afflicted with mental illness if we have a perspective grounded in an understanding that this is a genetic diagnosis? How so?arrow_forwardOcular albinism is a sex-linked recessive disease carried on the X chromosome. A female carrier mates with a male with this disorder. What percentage of all of their children is predicted to be an albino female? 1) 0% 2) 25% 3) 50% 4) 75% 5) 100%arrow_forwardThe role of the TPMT genotype in response to treatment emphasizes the importance of pharmacogenomics. What changes in treatment would be recommended for someone homozygous recessive for TPMT, compared to someone that is homozygous dominant?arrow_forward
- Nancy Jones is a doctor who specializes in genetic diseases. For many years she has been studying populations of people who have Huntington’s disease. Dr. Jones has a special interest in Huntington’s disease because her mother died of this disease after many years living in a wheelchair. Dr. Jones’s father does not appear to have the disease. She has developed a test that can detect the dominant Huntington’s gene before symptoms appear and she has performed this test on many people. This test involves mapping a person’s genome to determine if the dominant Huntington’s gene is present. Dr. Jones is unsure if she should take the test herself as it will not prevent the disease from developing, only give the person advanced warning of the disease. Nancy Jones has a sister. Draw a pedigree chart that maps the disease through this family. Make sure to indicate those family members that have the disease, those that do not have the disease and those whose status is unknown. If you were Nancy…arrow_forwardIf one person with the trait of Huntington's disease (H h) has 2 children with a partner who does not have a trait for the disease what is the chance that both children won't have the disease?arrow_forwardA recessive disease is represented in 8% of the US population. What is the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the US population for that disease Homozygous dominant: 0.36 Heterozygous: 2 x 0.36 x 0.64 Homozygous recessive: 0.64 Homozygous dominant: 0.362 Heterozygous: 2 x 0.36 x 0.64 Homozygous recessive: 0.642 Homozygous dominant: 0.72 Heterozygous: 2 x 0.72 x 0.28 Homozygous recessive: 0.28 Homozygous dominant: 0.722 Heterozygous: 2 x 0.72 x 0.28 Homozygous recessive: 0.282arrow_forward
- How does ancestry and race play into disease genetics?arrow_forwardThe father of five children begins to show symptoms of huntington disease. what is the probability that same, the man's second oldest son (11-2),, will suffer from the disease if he lives a normal life span? Sam's mother and her ancestors do not have the diseas. Sam's father was adopted, so we do not know his biological family history for hunutington disease. Explore all possible outcome for sam and explain your reasoningarrow_forwardWhat is biological determinism? (Hint: are you destined to have the phenotype typically associated with your genotype? Do your genes determine your destiny?) Explain the misconception of biological determinism.arrow_forward
- Consider an autosomal recessive disease in which an individual must inherit two recessive alleles to display the disease phenotype. What is the probability that a woman who is a heterozygous for the trait and a man who is homozygous for the dominant allele will produce an offspring with the autosomal recessive phenotype? Assume no new mutations occur. Select one 1.) 100% 2.)25% 3.) 0% 4.)50% 5.) More information is neededarrow_forwardWhy are there so few Y-linked traits in humans?arrow_forwardFigure 3 shows the karyotypes of two individuals suffering from a genetic disorder. a) Name the genetic disorder for individuals A and B. b) Give three characteristics of individual B. c) What is the gender of individual A?arrow_forward
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