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- Suppose two parents are healthy carriers of the sickle cell allele. The genotype of each parent is HbAHbS (HbAis the normal allele, and HbS is the sickle-cell allele).How likely is it for a child of these parents to have sickle cell anemia (HbSHbS)?Describe the phenotype of individuals who inherit one copy of the HbS allele and one copy of the HbA allele-Sickle Cell Trait ( find the source to support the information)If a mother with sickle-cell anemia and a father with the sickle-cell trait havechildren, calculate the percentages of each genotype and phenotype of the offspring from the Punnett square.
- Is the sickle cell allele dominant or recessive? Explain. What is sickle cell trait?Given the information regarding sickle cell anemia, if two carriers were to have children, what would be the genotypes and phenotypes of their children? Would any of the children show symptoms of the disease?Sickle-cell disease is an autosomal recessive genetic disorder. How many mutated hemoglobin alleles do people with sickle-cell disease have?
- Sickle cell anemia follows a single-gene pattern of inheritance, with two alleles: one allele (S) produces normal hemoglobin, and the other (s) produces abnormal hemoglobin. Describe the phenotype outcome for each of the three possible genotypes (SS, Ss and ss), with regard to sickle cell anemia and malaria.If I got an A from my father and a O from my mother for my genotype. How would my phenotype be expressed? What is my blood type? Explain your reasoning for both answers.Explain why Huntington disease is caused by a dominant allele
- For an individual expressing the dominant phenotype, explain why you must list two possible genotypes.Consider a woman whose brother has hemophilia A but whose parents are healthy. What is the chance that she has inherited the hemophilia allele? What is the chance that the woman will conceive a son with hemophilia?Given that the normal hemoglobin allele (H) is dominant to the sickle-cell allele (h), each time two Hh individuals have a child together, what is the chance that the child will have sickle-cell disease? (a) 0% (b) 75% (c) 25% (d) 50% (e) 100%