And chimeras are also created (sort of) by bone marrow transplants[1].<p>[1] <a href="http:&#x2F;&#x2F;genetics.thetech.org&#x2F;ask&#x2F;ask208" rel="nofollow">http:&#x2F;&#x2F;genetics.thetech.org&#x2F;ask&#x2F;ask208</a>