Seven centric shifts and three reciprocal interchanges, all newly-arisen in natural populations, have been tested for their inheritance in the dioecious flowering plant Rumex acetosa. In backcrosses b...
A screening procedure was devised for the isolation of X-ray-induced mutations affecting the expression of the A immobilization antigen (i-antigen) in Paramecium tetraurelia. Two of the mutations isol...