1 Scenario 1: A man and woman have decided to have children but are worried about possible genetic diseases. The couple visits a geneticist to determine what the possible risks are for their future children. The couple discovers that the mom is a carrier, or heterozygous with the diabetes allele and the dad is homozygous dominant, so neither of them have the disease but the mom has one recessive allele. In order to have Diabetes, you have to have two recessive alleles. The following year, the parents are blessed with a bouncing baby boy! What is the correct genotype of the mom? Aa B) AA aa

1 Scenario 1: A man and woman have decided to have children but are worried about possible genetic diseases. The couple visits a geneticist to determine what the possible risks are for their future children. The couple discovers that the mom is a carrier, or heterozygous with the diabetes allele and the dad is homozygous dominant, so neither of them have the disease but the mom has one recessive allele. In order to have Diabetes, you have to have two recessive alleles. The following year, the parents are blessed with a bouncing baby boy! What is the correct genotype of the mom? Aa B) AA aa

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Description: E-Question 1/18NEXTA BOOKMARKPreviousScenario 1:A man and woman have decided to have children but are worried about possible genetic diseases. The couple visits ageneticist to determine what the possible risks are for their future children. The coup

Human Heredity: Principles and Issues (MindTap Course List)

11th Edition

ISBN:9781305251052

Author:Michael Cummings

Publisher:Michael Cummings

Chapter12: Genes And Cancer

Section: Chapter Questions

Problem 1CS: Mike was referred for genetic counseling because he was concerned about his extensive family history...

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Mike was referred for genetic counseling because he was concerned about his extensive family history of colon cancer. That family history was highly suggestive of hereditary nonpolyposis colon cancer (HNPCC). This predisposition is inherited as an autosomal dominant trait, and those who carry the mutant allele have a 75% chance of developing colon cancer by age 65. Mike was counseled about the inheritance of this condition, the associated cancers, and the possibility of genetic testing (on an affected family member). Mikes aunt elected to be tested for one of the genes that may be altered in this condition and discovered that she did have an altered MSH2 gene. Other family members are in the process of being tested for this mutation. Is colon cancer treatable? What are the common treatments, and how effective are they?
Mike was referred for genetic counseling because he was concerned about his extensive family history of colon cancer. That family history was highly suggestive of hereditary nonpolyposis colon cancer (HNPCC). This predisposition is inherited as an autosomal dominant trait, and those who carry the mutant allele have a 75% chance of developing colon cancer by age 65. Mike was counseled about the inheritance of this condition, the associated cancers, and the possibility of genetic testing (on an affected family member). Mikes aunt elected to be tested for one of the genes that may be altered in this condition and discovered that she did have an altered MSH2 gene. Other family members are in the process of being tested for this mutation. Seventy-five percent of people who carry the mutant allele will get colon cancer by age 65. This is an example of incomplete penetrance. What could cause this?
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