DNA replication occurs in the S phase. After that is G2, which is growth and final preparations for division. Chromosomes are checked for errors and repairs are made if needed. Essentially, the cell prepares for division.
Answer:
RNA polymerase is the main transcription enzyme. Transcription begins when RNA polymerase binds to a promoter sequence near the beginning of a gene (directly or through helper proteins). RNA polymerase uses one of the DNA strands (the template strand) as a template to make a new, complementary RNA molecule.
Explanation:
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The right answer is C) vector
In molecular biology and genetic engineering, vectors are DNA molecules that allow the propagation of sequences of interest. These are chimeric DNA molecules such as plasmids or artificial bacterial chromosomes, containing an origin of replication and one or more genetic markers. The origin of replication allows the maintenance of the vector in the target cell during generations.
The answer is D. The river basin goes out into the ater shed leading straight for the ocean!
