The answer is probably GCU AGA : )
B. Hydrogen bonds make the positive sides of water molecules stick to each other
Nitrogenous base, sugar and phosphate
Derived from the inner cells of a human blastocysts , a very early human embryo.
At the blastocyst stage, five to 10 days after fertilization,
the embryo is a cluster of 100-200 cells
The nucleus is replicated , therefore a copy of DNA is made