Answer: promoters
Explanation:
Promoters are DNA sequences that direct RNA polymerase to the initiation site. Promoter sequences are simply DNA sequences that helps in defining where the gene transcription by RNA polymerase will start.
Promoter sequences are located directly upstream and are an important part of the expression vectors as the binding of DNA to the RNA polymeras are being controlled by them.
Commensalism- A whale and barnacles
Mutualism- The Oxpecker and the Rhino, the rhino provides a place for the Oxpecker to perch, while the Oxpecker eats all the bugs and parasites off the rhino.
Parasitism- A tick on a deer, and potentially harming the deer. The tick gains while the deer loses.
The advantage to a scientist is that it makes calculations easy using exponential functions. The disadvantage is that it may not capture some subtle complication that changes the answer at the fifth place after the decimal point.<span>
</span>
