For Heathrow Terminal 4, follow the signs inside the terminal building for the free shuttle bus service to Heathrow Central train station, where you can get on the Heathrow Express train. The shuttle service from Terminal 4 departs every 15 minutes and is a 4 minute journey.
Definition of transcript 1 a: a written, printed, or typed copy; especially: a usually typed copy of dictated or recorded material b: an official or legal and often published copy
Transcription is the process by which a transcript (mRNA) of the gene is created. Transcription factors can recruit the rest of the mRNA creating machinery to the target gene. The number and types of other factors varies with species, cell type, and even what the target gene is.efinition of Gene Expression. A gene is a small piece of genetic material written in a code and called DNA. Each gene has within it a set of instructions for making molecules that organisms need to survive. Genes themselves cannot be used by an organism.