Answer:
The correct option is A. promoters are all oriented in the same direction
Explanation:
A gene consists of a base sequence that is transcribed (transcription unit), in addition to two sequences that are not transcribed and that weaken (promoter and termination signal). Transcription by RNA polymerase takes place sequentially and in order along the DNA strand. The starting point is framed by a promoter, which is "upstream" (in relation to the direction of transcription) and adjacent to the transcription unit and ensures that the RNA polymerase binds to the DNA coding strand instead right. If all of the transcripts originate from the same DNA strand, the promoters must be oriented in the same direction, like that the promotor is going to regulate the transcription or gene expression. Similarly, the sequence of the termination signal, located just "downstream" after the transcription unit, interrupts the advance of the polymerase and terminates the transcription.
A) so every aninal is recognized with all scientists of different language
b) to show evolutionary proximity and one species ancestors and common ancestors
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