Which of the following is not a cost of sexual reproduction? a) Only half of an individual's alleles are passed on to their offspring. b) Males and females must locate each other in order to mate. C) Meiosis produces recombinant chromosomes, creating gametes with unique combinations of alleles. d) Infections can be transmitted sexually. Evidence of glyphosate as a potent agent of selection on weed populations includes a) independent mutations of a single amino acid in the EPSPS gene in ryegrass and goosegrass species, enabling plants to survive. b) gene duplication in Palmer amaranth resulting in extra copies of the EPSPS gene so that enough enzyme is produced, enabling plants to survive. c) a and b d) none of the above.