Il n'existe pas d'organisme à 250 gènes, ... il faut savoir lire mon vieux.
250 est le seuil minimal théorique.
Un rappel peut-être ?
**Several theoretical and experimental** studies have endeavored to derive the minimal set of genes that are necessary and sufficient to sustain a functioning cell ***under ideal conditions***, that is, in the presence of ***unlimited amounts of all essential nutrients*** and in the ***absence of any adverse factors, including competition***.