There are several reasons why the primase used to make the RNA primer for DNA replication is not suitable for gene transcription.

Which of the statements below is not one of those reasons?

a. Primase initiates RNA synthesis on a single-stranded DNA template.

b. Primase can initiate RNA synthesis without the need for a base-paired primer

c. Primase synthesizes only RNAs of about 5–20 nucleotides in length.

d. The RNA synthesized by primase remains base-paired to the DNA template.

The correct answer is option b.

Explanation:

Primase refers to an enzyme that plays an important role in DNA replication, the primers works as the point of initiation for the synthesis of DNA. The primase is a kind of RNA polymerase as it is an enzyme that give rise to short sequences of RNA known as primers.  

Primase after getting associated with a single-stranded DNA template starts the process of the production of RNA. Primase combines with the DNA helicase and gives rise to a complex composition known as primosome. After binding with DNA helicase, primase gets stimulate and begins the production of the short RNA primer. Primase does not require a base-paired primer to start the process of RNA synthesis, however, it gives rise to sequences of RNA, which are approximately 5 base pairs in length.  

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 !