Of or relating to recombination; formed by recombination.

Of genetic material: assembled by genetic recombination or genetic engineering. Of an organism, cell, or protein: being or containing the…

Genetics. Designating any form of genetic recombination that occurs by a process other than the fusion of gametes, as (in certain fungi) by the…

Tending to cause genetic recombination; (also) readily or frequently undergoing genetic recombination.

That does not undergo recombination; that involves no, or greatly reduced, recombination; esp. designating mutant bacteria lacking enzymes involved…