Years ago someone made the following claim: “Rh negative blood cannot be cloned” It sometimes changed to “O negative blood cannot be cloned”. To this day, a number of searches leading to this blog stems from the term “Can Rh negative blood be cloned?” That is primarily due to this previous post: In order to answer the question properly, one must understand what exactly cloning is. Cloning is the process of producing individual organisms with identical or virtually identical DNA, either by natural or artificial means. In nature, some organisms produce clones through asexual reproduction.  When we refer to the term “cloning”, we are talking about the cloning of Nucleic acid segments or genes or possibly the expression of proteins. … Continue reading My answer to the question “Can Rh negative blood be cloned?”