So we get RH negative only if we have lowercase R, lowercase R. Now, instead of mating a father who is uppercase R, lowercase R and a mother who is uppercase R and lowercase R, let's suppose a woman who is RH negative. So lowercase R, lowercase R decides to have a child with a man with a male who is RH positive. Now, we know there are two different types of RH positives. We have uppercase R, uppercase R, which is homozygous dominant and we have the heterozygous, as shown. So let's suppose we have a man who is heterozygous and a female who is homozygous recessive and we have a female who is homozygous recessive and a male who is homozygous dominant. In both cases, when these individuals made to produce a child, an offspring there is a probability that the offspring will be RH positive.