Karen and Steve each have a sibling with sickle cell anemia. The sickle cell allele (n) is recessive to the normal allele (N). Neither Karen, Steve, nor their parents have the disease. Steve and Karen marry and have a child that has sickle-cell anemia. Make a pedigree showing the inheritance pattern of this trait through these families.
a.) Draw and label the pedigree correctly.
b.) Fill in the genotypes for all the people mentioned above.
c.) Identify the inheritance pattern shown.