不是我要说,不过同一本书,同一章要翻麻烦也至少整章看完再翻.
不晓得你是不是故意漏翻这段:
Sry: the Y chromosome sex determinant
In humans, the major gene for the testis-determining factor resides on the
short arm of the Y chromosome. Individuals who are born with the short arm
but not the long arm of the Y chromosome are male, while individuals born
with the long arm of the Y chromosome but not the short arm are female. By
analyzing the DNA of rare XX men and XY women, the position of the
testis-determining gene has been narrowed down to a 35,000-base-pair region
of the Y chromosome located near the tip of the short arm.
这段有空你自己翻翻吧.
"the DNA of rare XX men and XY women"
※ 引述《A6 (短ID真好)》之铭言：
: ※ 引述《A6 (短ID真好)》之铭言：
: : 嘘 myyalga: 那妳们直女的生物学学说定义或权威文章在 110.28.88.239 08/19 02:53
: : → myyalga: 哪里？ 110.28.88.239 08/19 02:53
: : → myyalga: 哪一篇生物学和妳讲，性别的染色体分类是 110.28.88.239 08/19 02:53
: : → myyalga: 如此！ 110.28.88.239 08/19 02:53
: 你好 可以
: 可能因为你是文组
: 所以你对生物学的知识匮乏 我不介意帮您提供
: biological female 的定义
: Developmental Biology. 6th edition.
: https://www.ncbi.nlm.nih.gov/books/NBK9967/
: Primary sex determination is the determination of the gonads. In mammals,
: primary sex determination is strictly chromosomal and is not usually
: influenced by the environment. In most cases, the female is XX and the male
: is XY. Every individual must have at least one X chromosome. Since the female
: is XX, each of her eggs has a single X chromosome. The male, being XY, can
: generate two types of sperm: half bear the X chromosome, half the Y. If the
: egg receives another X chromosome from the sperm, the resulting individual is
: XX, forms ovaries, and is female; if the egg receives a Y chromosome from the
: sperm, the individual is XY, forms testes, and is male. The Y chromosome
: carries a gene that encodes a testis-determining factor. This factor
: organizes the gonad into a testis rather than an ovary. Unlike the situation
: in Drosophila (discussed below), the mammalian Y chromosome is a crucial
: factor for determining sex in mammals. A person with five X chromosomes and
: one Y chromosome (XXXXXY) would be male. Furthermore, an individual with only
: a single X chromosome and no second X or Y (i.e., XO) develops as a female
: and begins making ovaries, although the ovarian follicles cannot be
: maintained. For a complete ovary, a second X chromosome is needed.
: 主要性别决定是性腺的决定。在哺乳动物中，初级性别决定严格由染色体决定，通常不受
: 环境影响。大多数情况下，女性为 XX，男性为 XY。每个人必须至少有一条 X 染色体。
: 由于女性是 XX，她的每个卵子都有一条 X 染色体。男性是XY，可以产生两种类型的精子
: ：一半带有X染色体，一半带有Y染色体。卵子从精子接收到另一条X染色体，则产生的个
: 体是XX，形成卵巢，并且是女性；如果卵子从精子接收到另一条X染色体，则产生的个体
: 是XX，形成卵巢，并且是女性；如果卵子从精子接收到 Y 染色体，则该个体是 XY，形成
: 睾丸，并且是男性。 Y染色体携带编码睾丸决定因子的基因。这个因素将性腺组织成睾丸
: 而不是卵巢。与果蝇的情况不同（下面讨论），哺乳动物的 Y 染色体是决定哺乳动物性
: 别的关键因素。拥有 5 条 X 染色体和 1 条 Y 染色体 (XXXXY) 的人是男性。此外，只
: 有一条 X 染色体而没有第二条 X 或 Y（即 XO）的个体发育为女性并开始形成卵巢，尽
: 管卵泡无法维持。对于完整的卵巢，需要第二条 X 染色体。
: : → myyalga: 不是说妳们最科学、最生物，现在要求妳们 110.28.88.239 08/19 02:54
: : → myyalga: 提供定义出处，不过分吧！ 110.28.88.239 08/19 02:54
: 这样定义可以吗 还是你认为写错了???
: ㄎㄎ