Allele-Specific Expression
nounPronunciation: /əˈliːl spɪˈsɪfɪk ɪkˈspreʃən/
Differential expression levels of different allelic variants at a single locus, often in response to environmental stress or developmental cues. This phenomenon reflects how genetic variation at the DNA sequence level translates into functional variation in stress tolerance and adaptive capacity.
Plain English
Different genetic versions of the same gene produce different amounts of protein in response to stress.
Etymology & History
Usage
"Allele-specific expression of the drought-tolerance gene DRE2 explained phenotypic variation in water-use efficiency across cultivars."
Style guide notes: Hyphenate when used attributively; use lowercase in descriptive contexts; specify gene names in parentheses.
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Frequently Asked Questions
What causes allele-specific expression differences?
Variation in promoter sequences, regulatory elements, or coding regions affects transcription and translation efficiency.
Why is allele-specific expression important in stress research?
It reveals genetic mechanisms underlying stress tolerance variation and informs breeding for improved cultivars.
Why Test Candidates on This?
Relevant for advanced molecular genetics and genomics courses emphasizing genotype-phenotype relationships in stress.
Required skill level: Expert