Law of Intersexuality - Law of Intersexuality

…RB Goldschmidt hypothesized that the female determining factor exists in the cytoplasm of the egg, and the male determining factor exists on the Z chromosome (male sex chromosomes are ZZ and females are ZW), and explained that the strength of these factors differs between species or developmental periods, and that sex reversal occurs during development, resulting in intersex (quantitative theory). In general, the later an organ develops, the greater the degree of influence of sex reversal, and the longer the developmental period after reversal, the stronger the intersex an individual becomes; this is called the law of intersex. In crustaceans, androgenic glands were discovered, and it was found that if this action is suppressed during development, the individual becomes intersex. …

*Some of the terminology explanations that refer to the "Law of Intersexuality" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…これをゴルトシュミットR.B.Goldschmidtは，雌性決定因子が卵の細胞質中に，雄性決定因子がZ染色体上に(雄の性染色体はZZで雌はZWである)存在すると仮定し，これらの因子の強さが品種間でまたは発生時期で異なり，発生途中で性転換がおこり間性が生ずると説明した(量的学説)。一般に後から発生する器官ほど性転換の影響をうける度合が大きく，転換から後の発生期間の長い個体ほど強い間性になるが，これを間性の時の法則という。甲殻類では，造雄腺が発見され，この作用が発生の途中で抑えられると間性になることがわかった。…

※「間性の時の法則」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報