Pre assessment Genetics 2013

    This is a required question
    This is a required question
    This is a required question
    This is a required question

    Sickle cell disease is a group of inherited disorders in which deoxygenated red blood cells become distorted and take on a shape like a sickle. There are two common alleles for this gene. One causes normally shaped red blood cells and the other allele causes the red blood cells to have a sickle shape. The sickled cells can lodge in the smallest blood vessels and reduce the circulation of blood to tissues. The sickle cell allele is most common in areas where the disease malaria is a significant problem, and among people whose ancestors are from those areas. Evidence shows that having just one sickle cell allele makes a person resistant to malaria. This genetic condition is a recessive trait. When an individual has only one allele for the sickle cell trait, the person is a carrier. The pedigree below represents a family in which some members have the sickle cell allele.

    Captionless Image
    This is a required question
    This is a required question
    This is a required question

    In teenage mutant ninja turtles, right handed allele is dominant to left handed allele.

    This is a required question

    In fraggles long noses is dominant to short noses.

    This is a required question

    Captionless Image

    Captionless Image
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question
    This is a required question