Is a negative blood type rare manual#

DNA Can and Does ChangeДЄs I hinted at before, each of us has a different set of DNA that makes us unique in our own special way. In the end you'll see that being Rh negative is just an ordinary DNA difference that happened the way these kinds of things usually do. In some situations, the good of parasite resistance trumps the bad of the pregnancy problems.ДЇor the rest of this answer I am going to focus on how DNA differences come about and how they can spread throughout the population. Some researchers think that it may make people more resistant to certain parasites like Toxoplasma. This difference has probably stuck around because it has some good points too.

Mom just has an ordinary DNA difference that can have bad effects on her pregnancy. As if the mother and child are from different species.Д«ut they're not.

HDN makes it look like the mother is rejecting the child. This is called hemolytic disease of the newbornВ or HDN. This can cause the baby to get very sick or even die. When an Rh negative mother is pregnant with an Rh positive child, the mother's immune system can attack the baby's blood. But some people think it must be special because of the effects it can sometimes have on pregnancy. So being Rh negative isn't any stranger than having blue eyes or red hair. No, being Rh negative did not come from aliens or gods. There is no need to invoke aliens, gods or reptiles. And when we look at Rh negative and Rh positive people, we see the usual kind of difference. We have different traits because of small differences in our DNA. There is DNA that controls our hair and eye color, our blood type and most everything else about us.

Is a negative blood type rare manual#

Remember, DNA is the instruction manual that makes us who we are. So, where do these sorts of differences come from? They come from our DNA! In this way, it isn't any stranger than different eye or hair colors. In fact, Rh negative blood is an ordinary trait that some people have and some people don't. However, there is no evidence to support this. What an interesting question about Rh negative blood! It would be very cool to think that our human ancestors bred with reptiles and/or gods.