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review problems - father files for divorce. Is he justified...

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1. Being able to roll your tongue is dominant over not being able to do so. A man and a woman who can both roll their tongues have a child who cannot roll its tongue. What are the genotypes of the parents? 2. Cystic fibrosis is the most common genetic disease among people of northern European descent. This disease is recessive and until very recently it always caused death before the child matured and had a chance to reproduce. Two normal people marry and have a child that has cystic fibrosis. a) What is the genotype of the parents? b) b) What is the chance that their second child will also have cystic fibrosis? Rr and Rr CF cf and CF cf 1/4
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3. A man with type B blood marries a woman with type B blood. They have a child with blood type AB and the
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Unformatted text preview: father files for divorce. Is he justified from the standpoint of genetics? Fathers Mothers genotype genotype B B or B B or B O B O A and B are codominant (partial dominance),O is recessive Children can have bloodtype B or O but not A Dominant, and not sex linked Mating of II4 and II5 shows it is dominant, also affected father II2 passed the Trait to a son (III2) so it cannot be sex linked. What is the most likely pattern of inheritance of the trait in this family? a. Dominant b. Recessive c. Sex-Linked C. It is recessive because parent who do not display the trait are passing it on to some of their children. It is likely to be sex linked because the trait is showing up only in males....
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review problems - father files for divorce. Is he justified...

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