During DNA replication, the hydrogen bonds must be broken between the complementary nitrogenous bases in the DNA double helix
Parasitism
Parasitism can be defined
as a relationship between species in which one organism (parasite) lives on or
in another organism which is the host, causing it some harm without immediately
killing it. Thus, parasitism is a kinds of close, symbiosis and persistent
biological interactions.
Answer:
It is individual organisms change their genes to adapt to their environment.
correct answer is A
