EBK INQUIRY INTO LIFE: RELEVANCY UPDATE
15th Edition
ISBN: 9781260178012
Author: Mader
Publisher: MCGRAW HILL BOOK COMPANY
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Textbook Question
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
A mother is a carrier of a recessive X-linked disorder. What are the chances of her offspring being afflicted by this disorder assuming a healthy father?
100% chance for male offspring; ~0% chance for female offspring
50% chance for male offspring; ~0% chance for female offspring
0% chance for male offspring; ~0% chance for female offspring
25% chance for male offspring; ~25% chance for female offspring
50% chance for male offspring; ~50% chance for female offspring
Chapter 23 Solutions
EBK INQUIRY INTO LIFE: RELEVANCY UPDATE
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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- The 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_forwardNancy 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_forward
- A 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_forwardWhy do polygenic characteristics have many phenotypes?arrow_forwardQ2arrow_forward
- describe why some genetic disorders might be dominant,incompletely dominant, or recessive, and give examplesof each?arrow_forwardWrite a short explanatory essay on the following statement: “Incases of genetically programmed phenotypic plasticity, naturalselection acts on the norm of reaction. Thus the norm of reactionas a whole—rather than any one phenotype—determines ifselection is positive or negative.”arrow_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
- Which of the following is an example of how genotype and environmental factors can work together to determine phenotype? O a) Temperature-senitive mutations O b) Nutritional factors resulting in epigenetic modification of genes c) Sex-influenced inheritance O d) Both A and B O e) Both A and Carrow_forward1)Explain the differences between the following terms:-Gene, allele, and locus-Genotype versus phenotype- Dominant versus recessivearrow_forwardWhat are Polygenic and Multiple allele?arrow_forward
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