Answer:
D) presence of transcription activators or repressors
Explanation:
The reason why this is not post-transcriptional regulation is that activators actually start the process of transcription by binding to specific sites. while on contrary when repressor binds it halt the process.
For example, there is a protein called CAP which in the presence of cAMP bind with promoter region and enhances the activity of RNA polymerase . While in the absence of cAMP it can not bind to promoter hence the transcription stooped.
After DNA replication has taken place, two molecules, each with one original and new strand is formed. This supports the idea of DNA replication.
The right way to write scientific names is: "<em>Genus</em> <em>specie"</em>. So, the right name is: "<em>Drosophila melanogaster</em>", letter b)
Hugs!
Depends of the surface, pressure, wind, humidity, precipitation
