In humans, Huntington's Disease is an autosomal dominant trait. Huntington's Disease has late onset, it manifests in the 40s and 50s, usually after the individual has reproduced. Symptoms are progressive and the affected patient, needs continuous support later on as the disease advances. A couple in which a woman had a father not affected, and a mother that died of Huntington's Disease, and had both parents also affected, plans to have 6 children with a man who has not history of this disorder in his family, is in his 50s and it is not affected. A) Please state the genotypes of the parents. Use H to denote the dominant allele and h as the recessive B) Determine the probability that the first 3 children born will have Huntington's Disease and the three last children will not. C) In general, what proportion of the children are expected to be female and suffer Huntington's disease trait? D) What is the probability that 4 of the children will exhibit Huntington's and two children not be affected?
In humans, Huntington's Disease is an autosomal dominant trait. Huntington's Disease has late onset, it manifests in the 40s and 50s, usually after the individual has reproduced. Symptoms are progressive and the affected patient, needs continuous support later on as the disease advances. A couple in which a woman had a father not affected, and a mother that died of Huntington's Disease, and had both parents also affected, plans to have 6 children with a man who has not history of this disorder in his family, is in his 50s and it is not affected. A) Please state the genotypes of the parents. Use H to denote the dominant allele and h as the recessive B) Determine the probability that the first 3 children born will have Huntington's Disease and the three last children will not. C) In general, what proportion of the children are expected to be female and suffer Huntington's disease trait? D) What is the probability that 4 of the children will exhibit Huntington's and two children not be affected?
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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Step 1: A) Let's denote the Huntington's disease allele as H(dominant) and the normal allele as h(recessive)
VIEWStep 2: B) The couple's genotypes are Hh (woman) and hh (man).
VIEWStep 3: c) proportion of the children are expected to be female and suffer Huntingtons disease trait
VIEWStep 4: d) the probability that 4 of the children will exhibit Huntington's and two children not be affected
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