What are the genotypes of elizabeth and john

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Elizabeth is married to John, and they have four children. Elizabeth has a straight nose (recessive) and is able to roll her tongue (dominant). John is also able to roll his tongue, but he has a convex (Roman) nose (dominant). Of their four children, Ellen is just like her father, and Dan is just like his mother. The other children-Anne, who has a convex nose, and Peter, who has a straight nose-are unable to roll their tongues. Answer the following questions about this family.

  • What are the genotypes of Elizabeth and John?
  • Elizabeth's father was a straight-nosed roller, while her mother was a convex-nosed non-roller. What can you figure out about their genotypes?

John's father was a straight-nosed roller, while his mother was a convex-nosed roller. What can you determine about their genotypes?

Reference no: EM132174872

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