1.simple, prokaryotic organisms have been on earth for over 3 billion years and have been able to grow and evolve into many different and successful prokaryotic organisms. which structure evolved in cells approximately one billion years ago that allowed for the forming of more complex, multicellular organisms? a) nucleus b) ribosome c) plasma membrane d) golgi apparatus 2. genetically modified grass varieties that carry genes for disease and drought resistance are now available. they were produced by recombinant dna technology. however, the government has still not approved the sale of most of them, due to cautionary factors. what is the main reason for this concern? a) the possibility of the fragile recombinant organisms dying. b) the possible patent violations from competing biotechnology companies. c) because the new genetically altered grasses are too expensive for consumers. d) release of genetically engineered organisms into the environme 3. at the end of meiosis ii, how does the dna in each of the four new cells compare to the dna from the original cell? a) half as much and genetically the same as the original b) twice as much and genetically the same as the original c) half as much and genetically different from the original d) twice as much and genetically different from the original 4.at the end of meiosis ii, how does the dna in each of the four new cells compare to the dna from the original cell? a) half as much and genetically the same as the original b) twice as much and genetically the same as the original c) half as much and genetically different from the original eliminate d) twice as much and genetically different from the original 5.speciation has definitely occurred when two groups of related organisms a) cannot interbreed successfully. b) have drastically different behaviors. c) have drastically different appearances. d) become permanently isolated from each other.