June 21, 2001
    Determining Paternity

    Dr. Greene's Answer: Determining paternity is now possible even before a baby is born. This is done by comparing DNA molecules -- our genetic blueprints. To do this you need a blood sample from both …

    March 8, 1999
    Blood Types 102: The Role of A, B, O, and AB Groups In Determining Paternity

    Dr. Greene's Answer: Having a baby is a lifelong responsibility and hopefully an even greater reward -- for somebody! As a mother's belly swells, she knows with deep certainty that the child is hers. …

    Understanding Blood Types
    March 5, 1999
    Understanding Blood Types

    Human blood genetics are quite complex because at each point there are a number of possible characteristics. Nevertheless, understanding blood types, and the genetics of human blood is far easier tha…

    Are they really my parents?
    April 4, 1996
    Are they really my parents?

    Dr. Greene's Answer: Genetics can be so confusing! I can easily see how after much research the issue about your parents would still appear murky. The modern science of genetics had its start in 1866 …

    Blood Types 101: An Introduction to ABO Blood Types and the Rh System
    April 4, 1996
    Blood Types 101: An Introduction to ABO Blood Types and the Rh System

    Dr. Greene's Answer: Genetics can be so confusing! I can see how the issue may appear murky. Because blood tests are common many people have questions about the genetic information found in the ABO …