It is a type of paradox whereby two arguments are presented for a proof, but the validity of the first depends on that of the second, and that of the second depends on the first. It is commonly known as a vicious circle. It is also a term used in genetics, for crossing for the improvement of plant and animal species. It is a Greek voice, where 948; 953; 945; 955; 955; 951; 955; 959; 962; (diallelos) means "reciprocal".
