How do historians define the term "modern era"? a. the period that began with the renaissance and ended with the american revolution b. the period that began after the great depression and ended at the start of the 21st century c. the period that began with the industrial revolution and ended with world war! d. the period that began after the renaissance and continues to today !

D. The period that began after the Renaissance and continues to today

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.