1) Agent 2) Capable of inducing mutation 
inducing genetic mutation.
Causing mutations; mutagenic substances may also be carcinogenic.
An environmental factor that causes genes to mutate more frequently. Radiation is a known mutagenic. Some chemicals are known to have mutagenic effects. HYPP is a documented modern-day mutation that occurred in the horse
<genetics, molecular biology> Inducing genetic mutation. ... Origin: Gr. Gennan = to produce ... (18 Nov 1997) ... 
(mu″tә-jen´ik) inducing genetic mutation.
Causing mutations; mutagenic substances may also be carcinogenic.
Something capable of making cellular-level changes in a living organism.
Type: Term Pronunciation: myū′tă-jen′ik Definitions: 1. Promoting mutation.
[adj] - capable of inducing mutation (used mainly of extracellular factors such as X-rays or chemical pollution)
adjective capable of inducing mutation (used mainly of extracellular factors such as X-rays or chemical pollution)
capable of inducing mutation or increasing its rate.