Single base DNA differences are called

Q. Location or sites where single base DNA differences occur are called as

Q. Read the following statements carefully and choose the correct statements:
a. In a transcription unit, the promoter located at the 5' end of coding strand.
b. The single strand DNA having the polarity 3' $\to$ 5' is the template strand.
c. RNA polymerase binds to operator during transcription.
d. Single base DNA differences occur in humans are called Polymorphism.

Q. Single stranded $DNA$ of $\varphi \times 174$ is called

Q. On an average how many purine N2 bases are present in single coil of DNA