Definition of intron in English:

intron

noun ˈɪntrɒnˈinˌträn

Biochemistry

A segment of a DNA or RNA molecule which does not code for proteins and interrupts the sequence of genes.
〔生化〕内含子，基因内区。比较EXON ¹
Compare with exon
Example sentencesExamples
- This finding is the first suggestion that multiple spliceosomal introns occur in ribosomal genes.
- First, many heterochromatic genes have large introns relative to the genome as a whole.
- The coding region is interrupted by several synthetic introns to improve gene expression.
- This exception may be the result of this region corresponding to a small intron in the Drosophila gene.
- The second insertion traps an exon of a different gene contained in an intron of the former gene.

Derivatives

intronic

adjective

Biochemistry

In the GART locus, however, simultaneous transcription of the purine gene and the intronic gene seems possible.
Example sentencesExamples
- A subset of 12 fragments was selected from 105 noncoding DNA fragments from both intronic and intergenic regions on the X chromosome.
- More than 200 causative alleles are known, and many recurrent alleles have been tested for the extent of intraallelic variability at an intronic microsatellite locus.
- Even though there was a certain amount of intra-allelic variation in intronic and third codon positions, an allele-specific DNA consensus sequence could be easily deduced.
- The upper band is amplified genomic DNA containing the intronic sequence.

Origin

1970s: from intra- 'within' + -on.

Definition of intron in US English:

intron

nounˈinˌträn

Biochemistry

A segment of a DNA or RNA molecule which does not code for proteins and interrupts the sequence of genes.
〔生化〕内含子，基因内区。比较EXON ¹
Compare with exon
Example sentencesExamples
- This finding is the first suggestion that multiple spliceosomal introns occur in ribosomal genes.
- First, many heterochromatic genes have large introns relative to the genome as a whole.
- The second insertion traps an exon of a different gene contained in an intron of the former gene.
- The coding region is interrupted by several synthetic introns to improve gene expression.
- This exception may be the result of this region corresponding to a small intron in the Drosophila gene.

Origin

1970s: from intra- ‘within’ + -on.

单词	intron
释义	Definition of intron in English: intron noun ˈɪntrɒnˈinˌträn Biochemistry A segment of a DNA or RNA molecule which does not code for proteins and interrupts the sequence of genes. 〔生化〕内含子，基因内区。比较EXON ¹ Compare with exon Example sentencesExamples This finding is the first suggestion that multiple spliceosomal introns occur in ribosomal genes. First, many heterochromatic genes have large introns relative to the genome as a whole. The coding region is interrupted by several synthetic introns to improve gene expression. This exception may be the result of this region corresponding to a small intron in the Drosophila gene. The second insertion traps an exon of a different gene contained in an intron of the former gene. Derivatives intronic adjective Biochemistry In the GART locus, however, simultaneous transcription of the purine gene and the intronic gene seems possible. Example sentencesExamples A subset of 12 fragments was selected from 105 noncoding DNA fragments from both intronic and intergenic regions on the X chromosome. More than 200 causative alleles are known, and many recurrent alleles have been tested for the extent of intraallelic variability at an intronic microsatellite locus. Even though there was a certain amount of intra-allelic variation in intronic and third codon positions, an allele-specific DNA consensus sequence could be easily deduced. The upper band is amplified genomic DNA containing the intronic sequence. Origin 1970s: from intra- 'within' + -on. Definition of intron in US English: intron nounˈinˌträn Biochemistry A segment of a DNA or RNA molecule which does not code for proteins and interrupts the sequence of genes. 〔生化〕内含子，基因内区。比较EXON ¹ Compare with exon Example sentencesExamples This finding is the first suggestion that multiple spliceosomal introns occur in ribosomal genes. First, many heterochromatic genes have large introns relative to the genome as a whole. The second insertion traps an exon of a different gene contained in an intron of the former gene. The coding region is interrupted by several synthetic introns to improve gene expression. This exception may be the result of this region corresponding to a small intron in the Drosophila gene. Origin 1970s: from intra- ‘within’ + -on.
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