What did not occur as a result of technological advancements made during world war ii? new machinery led to an increase in manufactured goods. the use of atomic weapons increased quickly. an interest in space exploration was created. new uses for medicine were discovered.?

New uses for medicine were discovered would be your answer.

4 copper and gold, the california gold rush is why im pretty sure.

genetics is the study of how dna works, the methodologies defining the new recent technologies allow scientist to have a panoramic view of the entire dna landscape, especially how genomes interact with their environment, including off course, factors outside their organisms.

thus is very possible the existence of both scenarios, where populations of isolated individuals have different genetic traits, and share traits related to genetic mutation, due rats can easily travel overseas using human transport channels. so scientists could get a vast number of data, including human interaction, evolution of rodents, health development, spread of infections, development of new organisms, how genomes evolve in different environments and so on.