What must first occur for transcription to begin? mrna moves the code from the nucleus to the ribosome for protein production. a gene is expressed through protein production. rna polymerase attaches to the promoter. a repressor protein must attach to the operator.

Which of the following statements is most likely correct about a rock belonging to the jurassic age and a rock belonging to the cambrian age? options: 1) they have identical fossils of organisms that have evolved over time. 2) both have animal fossils preserved in them due to weathering and erosion. 3) they contain different fossils because life on earth has changed through time. 4) the fossils in them were formed on the surface of earth due to exposure to sunlight.

What materials must dams have to produce electricity, and what must occur?

Which organelle will regrow during telophase?