Is this strand of DNA was used, what would be the complementary DNA produced? CGA CT

The answer is:

GCT GA

GCT GA.

Explanation:

DNA is the genetic material of all the living organism except few viruses. The DNA is made of four different nitrogenous bases, deoxyribose pentose sugar and the phosphate molecule.

The DNA show complementary because adenine always pairs with thymine and cytosine binds with guanine. The DNA strand is CGA CT. The complementary strand of this DNA strand is GCT GA (binding with specific nitrogenous bases).

Thus, the answer is GCTGA.