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This is the theory because all femle ova have female chromosomes.. Sperm have male and female chromosomes. If the sperm containing female chromosomes then nothing changes during fertilization. If male chromosomes, then changes take place to cause the cells to produce a male. There is scientific theory that this may be a cause of homosexuality in that the changes do not occur as expected. But this is only theory.
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They don't necessariy start as female, but they do have female organs. It is the presence of chemicals (due to Y chromosome) that forms the male organs from the female organs later on.
What else can I help you with?
Are all Glameow female?
No, not all Glameow are female. There is a 75% chance of Glameow being female and a 25% chance of Glameow being male.
Are all chickens female?
No, not all chickens are female. Chickens can be male or female, with females being called hens and males being called roosters.
All clams start out as a male or female?
male
Did Dorothea Dix start a all female academy in Connecticut?
yes
Do female cats calm down after being fixed?
yes female start to calm down when you get her fixed but if you have a male to you should get him fixed to or the female won't settle down that easily
Can a best female friend end up being your girlfriend?
If you start hinting to her that you like her, the sure it could :D
What female names start with the letter A?
Female names that start with the letter A:AbbyAbigailAdelineAddisonAgnesAlexAlexandriaAlexisAliceAliciaAlisonAlitaAlyssaAmandaAmberAmeliaAmyAnastasiaAndreaAngelaAngelinaAngieAnitaAnnAnnaAnnabelAnnabelleAnneAnnetteAnnieAntoinetteArleneAshleyAshtonAubreyAudreyAuroraAvery
What female names start with L?
Female names that start with the letter L:LaceyLakishaLanaLaraLatashaLatishaLatonyaLatoyaLauraLaurelLaurenLaurieLaverneLawandaLeaLeahLeannLeanneLeeLeighLeilaLelaLenaLenoraLenoreLeolaLeonaLeslieLethaLeticiaLidiaLilaLilianLillianLillieLillyLindaLindseyLisaLizzieLoisLolaLoraLoraineLorenLorenaLorettaLoriLornaLorraineLorrieLottieLouLouisaLouiseLuannLuciaLucileLucilleLucindaLucyLuellaLuisaLulaLydiaLyndaLynetteLynn
What words start with female?
female starts and ends in female! simple!
All clams start out as males or female?
All clams start out as males first. Some decide to become females at some point in their lives.
How Does the UK celebrate Halloween?
we were enspired by the americans.Back in them days it was all about which certain aged female or female hag was accused of being a witch.
Can a female being get pregnant by a female dog?
NO
