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Deafness is often inherited in humans as an autosomal recessive trait. Assume that this is the case here. Two severely deaf people meet and marry. They have four children and all of them have normal hearing. What is the MOST reasonable explanation for this outcome? Select one: a. The mutant allele for deafness shows variable expressivity and the normal children may have some hearing loss that is difficult to detect. b. Complementation has occurred in the children, indicating that the deafness mutations in the parents involved different genes. c. Deafness in this family is most likely caused by an epigenetic change such as the addition of methyl groups to the DNA. d. Deafness in this family shows a genetic maternal effect with the condition being determined by the genotype of the mother.

Deafness is often inherited in humans as an autosomal recessive trait. Assume that this is the case here. Two severely deaf people meet and marry. They have four children and all of them have normal hearing. What is the MOST reasonable explanation for this outcome? Select one: a. The mutant allele for deafness shows variable expressivity and the normal children may have some hearing loss that is difficult to detect. b. Complementation has occurred in the children, indicating that the deafness mutations in the parents involved different genes. c. Deafness in this family is most likely caused by an epigenetic change such as the addition of methyl groups to the DNA. d. Deafness in this family shows a genetic maternal effect with the condition being determined by the genotype of the mother.

Human Anatomy & Physiology (11th Edition)
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
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Deafness is often inherited in humans as an autosomal recessive trait. Assume that this is the case here. Two severely deaf people meet and marry. They have four children and all of them have normal hearing. What is the MOST reasonable explanation for this outcome? Select one: a. The mutant allele for deafness shows variable expressivity and the normal children may have some hearing loss that is difficult to detect. b. Complementation has occurred in the children, indicating that the deafness mutations in the parents involved different genes. c. Deafness in this family is most likely caused by an epigenetic change such as the addition of methyl groups to the DNA. d. Deafness in this family shows a genetic maternal effect with the condition being determined by the genotype of the mother.
Transcribed Image Text:Deafness is often inherited in humans as an autosomal recessive trait. Assume that this is the case here. Two severely deaf people meet and marry. They have four children and all of them have normal hearing. What is the MOST reasonable explanation for this outcome? Select one: a. The mutant allele for deafness shows variable expressivity and the normal children may have some hearing loss that is difficult to detect. b. Complementation has occurred in the children, indicating that the deafness mutations in the parents involved different genes. c. Deafness in this family is most likely caused by an epigenetic change such as the addition of methyl groups to the DNA. d. Deafness in this family shows a genetic maternal effect with the condition being determined by the genotype of the mother.
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