Organizmdagi genlarning birikish guruhi shu organizm xromosomalarining to‘plamiga teng bo‘ladi. Jumladan, makkajo‘xorida (Zea mays) xromosomaning gaploid to‘plami va birikish guruhi _____ ga, no‘xatda (Pisum sativum) _____ ga, drozofila meva pashshasida (Drosophila melanogaster) _____ ga, odamda (Homo sapiens) _______ ga teng.