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2

A repressor inhibits transcription, thus one expects low transcription when the repressor is present. Thus, if a protein acts as a repressor when it binds arabinose, then when arabinose is present the protein will inhibit transcription. In the typical synthetic case of AraC and pBAD, AraC+arabinose does not act like a repressor, but an activator of pBAD. ...


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Sorry, but I can't comment (<50 rep). Dyad Chromosomes, as you say, are only formed during Cell Division (Mitosis and Meiosis). They are not present during the interphase, when DNA rests in the nucleus in an uncoiled state. If you know about transcription (your question suggests so), this much should have cleared your answer. If not, then see this or this ...


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I prefer a conceptual distinction rather than a mnemonic in this case. I've always thought of a transcript as an exact copy of record - that's the meaning of the word in English, and an RNA transcript is effectively an exact copy of the DNA message. Sure, there are complications like the uracil in RNA, and that the strand that is actually copied from has the ...


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