Ronan O'Rahilly Professions : Film Producer Born : May 21, 1940 Browse All Authors Famous Quotes by Ronan O'Rahilly Although life is a continuous process, fertilization is a critical landmark because, under ordinary circumstances, a new, genetically distinct human organism is thereby formed.... The combination of 23 chromosomes present in each pronucleus results in 46 chromosomes in the zygote. Thus the diploid number is restored and the embryonic genome is formed. The embryo now exists as a genetic unity. Ronan O'Rahilly unity ordinary numbers Similar Authors Brian Grazer film-producer Bunny Reuben film-producer Brian Jett film-producer Arthur Cohn film-producer Alan Finger film-producer Ivan Reitman film-producer All Authors