You want to use RNA interference to make a fruit fly that lacks the function of gene X only in its antenna - the rest of the fly's body has a functional gene X. Which of the following things would you need to construct an RNAi transgene for this purpose? Check all that apply? 1. A gene X cDNA.
2. A DNA segment containing a fly promoter.
3. An enhancer active only in the antenna.
4. The enhancer of gene X.
5. A DNA segment containing the P element inverted repeat sequence.
6. Genomic DNA 5' and 3' to the transcription start of gene X.