The fluorescence gene is used to identify GM mosquitoes. The lethality gene, which is more accurately called tetracycline transcriptional activator variant (or tTAV), encodes a protein that blocks the transcription of several other genes that are essential to mosquito development. GM mosquito larvae that produce the tTAV protein die before reaching maturity. However, the tTAV protein cannot prevent the transcription of other genes when it is bound to the antibiotic tetracycline. Therefore, tetracycline acts as a repressor of the lethality gene, or, in other words, its antidote.
Q. Choose synonym for the word ‘transcription ‘ from given passage
1.introduction
2.evidence
3 Variation
4.induction
5. Deduction
The word “transcription” in the passage is used in a biological/genetic context — “encodes a protein that blocks the transcription of several other genes.”As per Latin etymology, the word “transcription” originates from the Latin transcribere, meaning “to copy, write over, or transfer” — and means writing out a copy or converting genetic information from one form to another. “Evidence” means proof or data supporting a conclusion — it bears no semantic relationship to “transcription” either in its biological sense (copying DNA into RNA) or its general English sense (copying/transferring information).None of the five options — Introduction, Evidence, Variation, Induction, or Deduction — is a recognized or standard synonym of “transcription” in any context. The correct synonym would be words like “copying,” “transfer,” or “duplication,” none of which appear in the options.
