Why would a system of reproduction in which one organism simply divides into two ​ — and has done this very well for who knows how long — ​ develop into a system in which two things combine to form one?
Kāpēc gan vairošanās procesam, kura laikā viens organisms sadalās divos — un tas ir sekmīgi noticis jau neiedomājami ilgu laiku —, bija jāpārtop procesā, kurā ir vajadzīgi divi organismi, lai rastos jauns organisms?