ページの作成:「The denotes the absence of a 2nd sexual intercourse chromosome. Human sex is identified by the presence or absence of a Y chromosome with a purposeful SRY gene. Its princ…」
(ページの作成:「The denotes the absence of a 2nd sexual intercourse chromosome. Human sex is identified by the presence or absence of a Y chromosome with a purposeful SRY gene. Its princ…」)