Mother and the alleged father have blood type A and the child has blood type B, the man cannot be the child's father. A child cannot have type B blood unless either the father or the mother has that type.
Blood type alone, however, cannot prove that a man is a child's father. Courts typically use DNA tests to prove
paternity. This method tests blood or tissue for genes that link a specific parent and child. Test results are extremely
accurate and greatly reduce the uncertainties that once plagued paternity suits.
Problem 30.1
Martha becomes pregnant. She claims that Michael is the father, but Michael denies it and refuses to marry her or
support the child. Does the law require Michael to marry Martha? Does the law require unmarried people to provide
support for their children?