Which statement about classical greek drama is correct? a. by custom and by law, the cast of every play was made up entirely of female actors. b. the chorus's role was to sing, chant, and comment on the action of the play. c. greek playwrights avoided humor and satire lest they offend the ruling class. d. audiences never booed or cheered during performances out of respect for the actors.

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.