animal biology zoology biology a 1 a a a sperm cells any one egg cell polar bodies fertilized eggi a produces heterozygous male or heterozygous females primary primary spermatocyte sperm ells possible combnatons fig 323diagram showing the inheritance of unlike characters by a hybrid between two homozygous but unlike parents and the results of interbreeding these hybrids 597 hybridsin chap xxii reference was made to cross fertihza tion and hybridization a hybrid in the sense in which the term was there used referred to the production of an offspring by two i rn50f9.jpg from içina sperm View Photo