Familial Down syndrome is similar to primary Down syndrome in that it is caused by trisomy 21. However, in familial Downsyndrome, all or part of the third copy of chromosome 21 has translocated onto another autosome, typically chromosome 14. Incases of familial Down syndrome, one of the parents of the affected child is often a carrier of a translocated chromosome. Thetranslocation carrier parent does not have Down syndrome because he or she has a total of two copies of chromosome 21.Suppose that a woman is a translocation carrier of chromosome 21 on chromosome 14. She conceives six zygotes with a normalman who carries no aneuploidies. Match the description of the chromosomes inherited by each zygote with the viability ofthezygote.Viable normal, or translocation carrierViable, with Down syndromeInviableAnswer Banktwo normal copies of 21, one normal copy of 14two normal copies of 21, two normal copies of 14one 21 to 14 translocation, one normal copy of 21, two normal copies of 14one 21 to 14 translocation, two normal copies of 21, one normal copy of 14 Atman who carries no aneuploidies. Match the description of the chromosomes inherited by each zygote with the viability ofthe zygote.Viable normal, or translocation carrierViable, with Down syndromeInviableAnswer Banktwo normal copies of 21, one normal copy of 14two normal copies of 21, two normal copies of 14one 21 to 14 translocation, one normal copy of 21, two normal copies of 14one 21 to 14 translocation, two normal copies of 21, one normal copy of 14one normal copy of 14, one normal copy of 21, one 21 to 14 translocationtwo normal copies of 14, one normal copy of 21

Name: Familial Down syndrome is similar to primary Down syndrome in that it
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Description: Familial Down syndrome is similar to primary Down syndrome in that it is caused by trisomy 21. However, in familial Downsyndrome, all or part of the third copy of chromosome 21 has translocated onto another autosome, typically chromosome 14. Incases

Downs syndrome is the most common chromosomal disorder characterised by various clinical symptoms…

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man who carries no aneuploidies. Match the description of the chromosomes inherited by each zygote with the viability of the zygote.

Human Biology (MindTap Course List)

11th Edition

ISBN:9781305112100

Author:Cecie Starr, Beverly McMillan

Publisher:Cecie Starr, Beverly McMillan

Chapter20: Chromosomes And Human Genetics

Section: Chapter Questions

Problem 3CT: People with Down syndrome have an extra copy of chromosome 21, for a total of 47 chromosomes....

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