

Every human being is born with two individual Positive or Negative Rh Blood Factors. During conception, each parent must pass one of their Factors on to their children. Below you can see the way a child s Positive or Negative Rh Blood Factor is finally determined; based on their receipt of the two parents combined Rh Factors.
If a person has + + genes, they are Rh-positive (Rh+).
If a person has + - genes, they are Rh-positive (Rh+).
If a person has - - genes, they are Rh-negative (Rh-).
During delivery, it do not have disease
