how a boy and a girl born together plzz answer
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One egg is fertilized by one or two ovaries in human female each month.Now during copulation the sperms are released by human male through the utrues of human female. The sperms contains sex chromosome which may be Yor X.Also the human egg cells contains sex chromosome like sperms.
Now during zygote formation the sex chromosome mix now if XY chromosomes come together in a zygote then from that zygote boy is born and if XX chromosomes come together then from that zygote girl is born .Boy and girl are born together if each ovaries fertilises one egg together which is rare. Please mark my answer as brainliest.
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