Answer:
<em>T</em><em>h</em><em>e bases are paired by</em><em> </em><em><u>hydrogen</u></em><em><u> </u></em><em>bonds along the axis of the molecule</em><em>.</em>
Explanation:
this is the correct answer!!
The cell first needs to replicate DNA by using the previous DNA as template. Then the cell can get two sets of same DNA. When division, each set DNA will go to each cell so that a full set of DNA gets passed on to each daughter cell.
Because science involves a lot of replication to confirm results. That means without the systems, it would take a long time to get the results right.
Answer:
It is called the S-A node, or rather sinus node.
