Question

in the process of dna replication, bonds are broken between:
a sugars, bases
b sugars
c phosphates, bases
d bases

Explanation:

In DNA replication, the double helix unwinds and the hydrogen bonds between the complementary nitrogenous bases (adenine - thymine, guanine - cytosine) are broken to separate the two strands. Sugars are connected by phosphodiester bonds (not broken in the initial strand separation for replication), and the bonds between sugars - bases and phosphates - bases are not the ones broken during the initial steps of replication for strand separation. So the bonds broken are between bases.

Answer:

d. Bases