单词	mutagen
释义	mutagen /ˈmjuːtədʒ(ə)n / noun An agent, such as radiation or a chemical substance, which causes genetic mutation.Among the mutagens that have been used to induce mutations, chemical mutagens administered in various ways have become especially popular.... The integrity and stability of the genetic material is continuously being threatened by endogenous and exogenous factors such as chemical mutagens and radiation. Cell-culture procedures, chemical mutagens, and radiation all have been applied in what people now refer to as traditional, or conventional, plant breeding for the better part of a century. Derivatives mutagenesis /mjuːtəˈdʒɛnɪsɪs/ noun ... We carried out several rounds of mutagenesis for each chromosome arm. He was preeminent in the fields of mutagenesis and radiation biology. We and others have shown that studies of mutagenesis in cultured mammalian cells can help predict carcinogenesis. mutagenic /mjuːtəˈdʒɛnɪk / adjective ... This cell line detects a wide variety of mutagenic lesions, including point mutations, deletions and various types of chromosomal aberrations. This suggests a mutagenic source different from germ cell replication. Substances which allow the Salmonella to grow are considered mutagenic. mutagenicity /mjuːtədʒ(ə)ˈnɪsɪti/ noun Origin 1940s: from mutation + -gen.
随便看	sowbug sower Sowetan Soweto sown sow one's wild oats sow (or plant) dragon's teeth sow the seed (or seeds) of (sow the wind and) reap the whirlwind sowthistle sox Soxhlet soy soya soya bean soya meal soya milk soya sauce soybean soybean milk soyfood Soyinka, Wole soymeal soy milk soy sauce

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