Achromosome is discovered in which all of the transcripts originate from the same dna strand. this implies that in this chromosome

a. promoters are all oriented in the same direction
b. adjacent promoters are oriented in opposing directions
c. promoters are randomly oriented
d. none of the above
e. all of the above

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.

d concave shape of wave rock

explanation:

the concave shape of wave rock is a very good evidence that supports the evolution of earth due to chemical weathering. if we talk about structure of   wave rock, studies have estimated that it is around 2.7 billion years old. it also serves as the foundation of evidence that it was the place where australian continent began to form.

how the structure of wave rock was created?

studies suggest that structure of wave rock was created when the surrounded area was started to weather due to which deposition of material started on the part of land which now contains wave rock.

the structure of wave rock is considered to be one of the best-known landforms in australia. at the height of around 15 cm, there can be found flared slopes which formulate the margins of hyden rock. it is now assumed by geologists that wave rock was created by subsurface water-induced weathering and not by glaciers, waves or wind.

due to deposition of material over the period of long time, the wave rock became tougher and tougher due to weathering from surrounding terrain. this makes it a physical evidence that supports   the evolution of earth due to chemical weathering.

hope it !