Pedigree Practice

Solve pedigree practice problems and master genetics!

I. Use the pedigree to complete the questions that follow. How many individuals in the family have the trait? 2 3 5 10 How many children did I-1 and I-2 have? 6 7 8 13 Is the trait in the pedigree dominant or recessive? dominant recessive can't tell Is the trait in the pedigree autosomal or sex-linked? autosomal sex-linked can't tell If couple II-1 and II-2 were to have another child, what is the chance of that child having the trait? 100% 50% 0% How are individuals III-5 and I-2 related? nephew to aunt granddaughter to grandfather grandson to grandmother niece to uncle II. Use the pedigree to complete the questions that follow. How many daughters did couple II-3 and II-4 have? 2 3 5 Is this trait dominant or recessive? dominant recessive can't tell Is this trait autosomal or sex-linked? autosomal sex-linked can't tell What is the genotype of individual II-4? homozygous dominant homozygous recessive heterozygous III. Use the pedigree to answer the questions that follow. Is the trait dominant or recessive? dominant recessive can't tell Is the trait autosomal or sex-linked? autosomal sex-linked can't tell If couple II-1 and II-2 were to have another child, what is the chance of that child having the trait? 100% 50% 0% Your Name: