| 释义 |
recombiˈnationless, a. Genetics.
[f. as prec. + -less.]
That does not show recombination.
1969L. Levine Biol. of Gene v. 101/2 They were able to isolate two recombinationless (Rec) mutants in an F strain of Escherichia coli K12. 1974Nature 4 Jan. 44/1 Recombinationless bacterial mutants are highly sensitive to near-ultraviolet, suggesting that DNA may be an indirect target of the action of near-ultraviolet. |