Question

In which order will free nucleotides add on to a single strand of DNA with the sequence ATTGCA during DNA replication?

Answer 1

The answer is T A A C G T.

Replication is a process in which DNA molecule is copied, and thereby two identical DNA molecules are produced. Complementarity is achieved through interactions between nucleobases. In the DNA, base complements are adenine - thymine (A-T) and guanine - cytosine (G-C).

So, free nucleotides will add in the following order T A A C G T:
original strand new strand
A T
T A
T A
G C
C G
A T