Question

The polarity in a DNA strand is indicated by referring to one end as the 3′ end

and the other as the 5′ end. Which structure is on the 3′ end?

Answer 1

The 3' end of a DNA strand refers to the end with a free hydroxyl group on the sugar molecule.

Step-by-step explanation:

In a DNA strand, the 3' end refers to the end that has a free hydroxyl group on the sugar molecule. The 5' end refers to the end that has a free phosphate group on the sugar molecule.

The 3' end is where the new nucleotides are added during DNA replication.