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Science & Technology
5 Useless Body Parts
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<blockquote data-quote="Peregrini" data-source="post: 54039" data-attributes="member: 2670"><p>I have to address this. It is an all too common, mistaken, belief that a fetus's sex isn't determined until later in development. It really disappoints me when I even see this in a supposed scientific article.</p><p></p><p>The highlighted part is completely false.</p><p>The sex of a fetus has been determined at conception. While the difference is not easily observed until later. The presence of a Y chromosome from the male gamete which has an SRY gene which produces the SRY protein which initiates the production of the testis produces a male. Yes, there are a number of genetic abnormalities that cause varying degrees of abnormal development but for all intents and purposes the sex is determined at conception. Fetus's are not all female at the start and they can not go either way. XY= male... XX= female...period!</p><p> </p><p>As fas as male nipples go, I do have a thought on that... perhaps the original pacifier?</p></blockquote><p></p>
[QUOTE="Peregrini, post: 54039, member: 2670"] I have to address this. It is an all too common, mistaken, belief that a fetus's sex isn't determined until later in development. It really disappoints me when I even see this in a supposed scientific article. The highlighted part is completely false. The sex of a fetus has been determined at conception. While the difference is not easily observed until later. The presence of a Y chromosome from the male gamete which has an SRY gene which produces the SRY protein which initiates the production of the testis produces a male. Yes, there are a number of genetic abnormalities that cause varying degrees of abnormal development but for all intents and purposes the sex is determined at conception. Fetus's are not all female at the start and they can not go either way. XY= male... XX= female...period! As fas as male nipples go, I do have a thought on that... perhaps the original pacifier? [/QUOTE]
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