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extrachromosomal element Line breaks: extra|chro¦mo¦som¦al elem|ent
Pronunciation: /ˌɛkstrəˌkrəʊməˈsəʊm(ə)l ˌɛləm(ə)nt/

Entry from British & World English dictionary

Definition of extrachromosomal element in English:


The DNA of a cytoplasmic organelle, such as a mitochondrion or chloroplast, responsible for cytoplasmic inheritance.
Example sentences
  • If, on the other hand, excision occurs by 1-bp staggered cuts, we expect that only the first nucleotide flanking the extrachromosomal element will correspond to the donor site.
  • The difficulty of removing the amplified gene by repeated backcrossings may suggest the presence of an extrachromosomal element, as often observed in other protozoa.
  • The transgene array in PD3815 is inherited as an extrachromosomal element.
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