Why must dna be able to make copies of itself?

The response is the basis for vaccination. primary secondary tertiary none of the above

What are the responsibilities of the region of the brain highlighted below? =+= will rate brainiest =+=

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim