1. Write the generation on the pedigree (roman numerals). 2. The pedigree shows the passing on of Hitchhiker's Thumb in a family. Is this trait dominant or recessive? How do you know? 3. How are individuals III-1 and III-2 related? 4. Name 2 individuals that have hitchhiker's thumb. 5. Name 2 individuals that are carriers of hitchhiker's thumb. 6. Write the genotypes for each individual on the pedigree. - there are only 4 that we know for sure.The rest, put the allele you do know and a ? for the second allele.

Question

1. Write the generation on the pedigree (roman numerals). 2. The pedigree shows the passing on of Hitchhiker's Thumb in a family. Is this trait dominant or recessive? How do you know? 3. How are individuals III-1 and III-2 related? 4. Name 2 individuals that have hitchhiker's thumb. 5. Name 2 individuals that are carriers of hitchhiker's thumb. 6. Write the genotypes for each individual on the pedigree. - there are only 4 that we know for sure.The rest, put the allele you do know and a ? for the second allele.

Answer 1

1. The generation on the pedigree is represented by Roman numerals. For example, I-1 represents the first individual in the first generation, II-2 represents the second individual in the second generation, and so on.2. The pedigree shows the passing on of Hitchhiker's Thumb in a family. This trait is recessive. We know this because individuals with the trait (III-1 and III-2) have parents (II-1 and II-2) who do not have the trait, indicating that the trait is not dominant.3. Individuals III-1 and III-2 are siblings.4. Two individuals that have hitchhiker's thumb are III-1 and III-2.5. Two individuals that are carriers of hitchhiker's thumb are II-1 and II-2.6. The genotypes for each individual on the pedigree are as follows:* I-1: Hh (carrier)* I-2: hh (affected)* II-1: Hh (carrier)* II-2: hh (affected)* III-1: hh (affected)* III-2: hh (affected)

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