Definition of introgression in English:

introgression

noun ˌɪntrə(ʊ)ˈɡrɛʃ(ə)nˌintrəˈɡreSHən

mass nounBiology

The transfer of genetic information from one species to another as a result of hybridization between them and repeated backcrossing.
〔生〕渐渗现象，基因渗入
Example sentencesExamples
- To introduce desirable genes from blue catfish into channel catfish through introgression, a genetic linkage map is helpful.
- In the absence of selection against genetic introgression, the incipient species should fuse.
- Therefore, there is the potential for gene introgression across species via backcross of hybrid females to the parental species.
- The two populations allow for a comparative phenotypic analysis of species-specific genome introgressions in a common genetic background.
- This would rule out scenarios of numt evolution involving horizontal transfer or introgression between species.

Derivatives

introgressive

adjective

Biology

It is possible that the inland plants Hodgdon called variety typica represent introgressive hybrids between L. pulchella and L. intermedia.
Example sentencesExamples
- Because hybrids are usually fertile, they can often produce introgressive hybrids with the parental species or triple hybrids with another taxa.
- Incongruence among data sets can arise from various biological processes, including introgressive hybridization, recombination, and gene conversion.
- For instance, introgressive events, even when rare, may be more important than mutations as a source of novel genetic variability within taxa.
- Plant biologists have long been comfortable with the notion that ‘good species’ can still exchange some genes via introgressive hybridization as have biologists concerned with hybrid zones.

Origin

Mid 17th century: from Latin introgredi 'step in', from intro- 'to the inside' + gradi 'proceed, walk', on the pattern of egression, ingression.

Definition of introgression in US English:

introgression

nounˌintrəˈɡreSHən

Biology

The transfer of genetic information from one species to another as a result of hybridization between them and repeated backcrossing.
〔生〕渐渗现象，基因渗入
Example sentencesExamples
- Therefore, there is the potential for gene introgression across species via backcross of hybrid females to the parental species.
- This would rule out scenarios of numt evolution involving horizontal transfer or introgression between species.
- In the absence of selection against genetic introgression, the incipient species should fuse.
- To introduce desirable genes from blue catfish into channel catfish through introgression, a genetic linkage map is helpful.
- The two populations allow for a comparative phenotypic analysis of species-specific genome introgressions in a common genetic background.

Origin

Mid 17th century: from Latin introgredi ‘step in’, from intro- ‘to the inside’ + gradi ‘proceed, walk’, on the pattern of egression, ingression.

词汇	introgression
释义	Definition of introgression in English: introgression noun ˌɪntrə(ʊ)ˈɡrɛʃ(ə)nˌintrəˈɡreSHən mass nounBiology The transfer of genetic information from one species to another as a result of hybridization between them and repeated backcrossing. 〔生〕渐渗现象，基因渗入 Example sentencesExamples To introduce desirable genes from blue catfish into channel catfish through introgression, a genetic linkage map is helpful. In the absence of selection against genetic introgression, the incipient species should fuse. Therefore, there is the potential for gene introgression across species via backcross of hybrid females to the parental species. The two populations allow for a comparative phenotypic analysis of species-specific genome introgressions in a common genetic background. This would rule out scenarios of numt evolution involving horizontal transfer or introgression between species. Derivatives introgressive adjective Biology It is possible that the inland plants Hodgdon called variety typica represent introgressive hybrids between L. pulchella and L. intermedia. Example sentencesExamples Because hybrids are usually fertile, they can often produce introgressive hybrids with the parental species or triple hybrids with another taxa. Incongruence among data sets can arise from various biological processes, including introgressive hybridization, recombination, and gene conversion. For instance, introgressive events, even when rare, may be more important than mutations as a source of novel genetic variability within taxa. Plant biologists have long been comfortable with the notion that ‘good species’ can still exchange some genes via introgressive hybridization as have biologists concerned with hybrid zones. Origin Mid 17th century: from Latin introgredi 'step in', from intro- 'to the inside' + gradi 'proceed, walk', on the pattern of egression, ingression. Definition of introgression in US English: introgression nounˌintrəˈɡreSHən Biology The transfer of genetic information from one species to another as a result of hybridization between them and repeated backcrossing. 〔生〕渐渗现象，基因渗入 Example sentencesExamples Therefore, there is the potential for gene introgression across species via backcross of hybrid females to the parental species. This would rule out scenarios of numt evolution involving horizontal transfer or introgression between species. In the absence of selection against genetic introgression, the incipient species should fuse. To introduce desirable genes from blue catfish into channel catfish through introgression, a genetic linkage map is helpful. The two populations allow for a comparative phenotypic analysis of species-specific genome introgressions in a common genetic background. Origin Mid 17th century: from Latin introgredi ‘step in’, from intro- ‘to the inside’ + gradi ‘proceed, walk’, on the pattern of egression, ingression.
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