In october 1957 the soviet union sends up sputnik i. the author writes, “there were no humans or animals on board.” why was this most likely the case? highlight text a. the satellite was too small to hold a live person or animal. b. space travel was considered too dangerous at this time to risk life. c. the united states had already sent a human and an animal into space. d. sputnik i was not equipped to support the needs of a human.

A. The satellite was too small to hold a live person or animal.

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.