Locations on sites in the human DNA where single base DNA differences occurs are called

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

Q. Single base DNA differences are called

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. The site on DNA where replication starts is called _______________.

Q. Circular single stranded DNA occurs in bacteriophage