<br /> If two cousins procreate will their children actually have a higher risks of birth defects.?<br />The more DNA you share, the greater the chance your offspring will have a genetic disease — like cystic fibrosis or sickle-cell anemia." Business Insider<br />That why marrying your first cousin is illegal in 24 US states.<br />People related to each other are more likely to carry the same genetic diseases.<br />That's why their children are more likely to have them as well. <br />
