The more curious question would ACTUALLY be how can an alpha x omega female pair have male children... as they did in one other story. Thanks.
http://www.mangago.zone/read-manga/abarenbo_honey/nbt/6d5913acc7b0dbb2/ChChapter_1/7/
according to this page all humans have penis's even omega, beta, and alpha females so a female can pregnant a another female
To answer this question is actually easy. In science we learn that when an X-chromozone sperm meets an x-chromozone egg it forms a female baby so thats how they had a girl. just like in man and woman baby making they can either have a boy or a girl. in omegaverse same sex genders isn't restricted in only making their sex. 2 males can have a girl and 2 females can have a boy. nothing unusual lol
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How can alpha woman make omega woman pregnant????