exon ['eksɒn]

例句:

• Four gene polymorphisms were identified in exon 7. They were Gly 551 X ( GGC → GGT ), Arg 554 His ( CGT → CAT ), Gln 567 Arg ( CAA → CGA ) and Val 582 Ile ( GTC → ATC ).
  同时在外显子7上发现4个位点的基因多态性,分别为Gly551X(GGC→GGT ) 、 Arg554His ( CGT→CAT ) 、 Gln567Arg ( CAA→CGA ) 和Val582Ile ( GTC→ATC ).
  
• That exon could not FORM chemical compounds was once believed by scientists.
  科学家们曾经认为稀有气体不能形成化合物.
  
• It is a missense mutation in exon III.
  它是位于外显子III的错义突变.