男生为何有乳头
你难道不觉得乳头这个东西在男生身上好像没什么功能一样吗？那为何我们男生为何还是拥有着他呢？
The answer is that as embryos men and women have similar tissues and body parts. If anything the embryo follows a ‘female template’. That is why nipples are present in both sexes. It is the effect of the genes, the Y chromosome and the hormone testosterone that brings about the changes and masculinises the embryo. Testosterone promotes the growth of the penis and testicles. Because nipples are there before this process begins the nipples stay!
—— Why Do Men Have Nipples
原来一切都是基因的错。鉴定一个认识男生女生的基因是X和Y。女生的就是XX，男生的就是XY。所以男生其实也可以很女生。
我想也许在最extreme时，男生也许会扮演着那个喂奶的角色。
Link:
Why Do Men Have Nipples
6 则回应 to “男生为何有乳头”
By 烈子 on Jun 23, 2006 | Reply
嘿！男生还会得乳癌呢！
By angelapple on Jun 23, 2006 | Reply
“男生其实也可以很女生”
最近中国东方卫视有个选秀节目”加油好男儿”,里面票选出的男生很多都很阴柔美,看来以后要习惯第三性……
By 黄德峻 on Jun 23, 2006 | Reply
angelapple: 我对这类人真的，少看少吐血
By feeling on Jun 24, 2006 | Reply
XY，男生的女性化原来是X在作怪，哈哈，我们都忘了。。。那么，为什么有女人男性化的叻？
By 黄德峻 on Jun 24, 2006 | Reply
feeling:也许X本身就有种强悍性在，不然怎么那么多女强人呢？还有，很多男人在家都是听老婆的
By yyyy on Jun 28, 2007 | Reply
男孩的乳头是用来被另外的男孩抚摩的！鸡奸的！