F factor

… Sexuality is also seen in bacteria and Spirogyra, where the one that transfers the genetic material DNA is usually called male and the one that receives it is called female. In the case of E. coli, the one that has a circular DNA called F factor is male, and the one that does not is female, and they are called F ⁺ bacteria and F- ^bacteria , respectively. F ⁺ bacteria form sex pili and mate with F- ^bacteria to transfer the F factor. …

*Some of the terminology that mentions "F factor" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…　雌雄の区別は細菌やアオミドロにもみられ，ふつう遺伝物質であるDNAを相手に渡すほうを雄，受け取るほうを雌という。大腸菌の場合，F因子F factorと呼ばれる環状DNAをもつほうが雄で，もたないほうが雌であり，それぞれF^＋菌，F^－菌という。F^＋菌は性繊毛を形成し，F^－菌と接合し，F因子の受渡しを行う。…

※「F factor」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