The achoo syndrome (sneezing in response to bright light) and trembling chin (triggered by anxiety) are both dominant traits in humans. a. What is the probability that the first child of parents who are heterozygous for both the achoo gene and trembling chin will have achoo syndrome but lack the trembling chin? b. What is the probability that the first child will have neither achoo syndrome nor trembling chin?

Human Heredity: Principles and Issues (MindTap Course List)
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ISBN:9781305251052
Author:Michael Cummings
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Chapter18: Genetics Of Behavior
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Problem 14QP: A pedigree analysis was performed on the family of a man with schizophrenia. Based on the known...
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The achoo syndrome (sneezing in response to bright light) and trembling chin (triggered by anxiety)
are both dominant traits in humans.
a. What is the probability that the first child of parents who are heterozygous for both the achoo
gene and trembling chin will have achoo syndrome but lack the trembling chin?
b. What is the probability that the first child will have neither achoo syndrome nor trembling chin?

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