Aplasmid that encodes resistance to ampicillin and tetracycline is digested with the restriction enzyme psti, which cuts the plasmid at a single site in the ampicillin-resistance gene. the dna is then annealed with a psti digest of human dna, ligated, and used to transform e. coli cells. (a) what antibiotic would you put in an agar plate to ensure that the cells of a bacterial colony contain the plasmid? (b) what antibiotic-resistance phenotypes will be found on the plate? (c) which phenotype will indicate the presence of plasmids that contain human dna fragments? why does lowering the ionic strength of a solution of double-stranded dna permit the dna to denature more readily (for example, to denature at a lower temperature than at a higher ionic strength)?

Can you identify which of the following groups of organisms are, or are not, populations? a. the american bison (bison bison) and grey wolves (canis lupus) currently living in yellowstone national parkb. all of the rainbow trout (oncorhynchus mykiss that) that have ever lived in lake eriec. the group of american bison (bison bison) currently living in yellowstone national parkd. a group of calliope hummingbirds (selasphorus calliope) and a group of rufous hummingbirds (selasphorus rufus) living in the same new hampshire woodse. the northern cardinals (cardinalis cardinalis) living on opposite shores of lake champlain f. all of the whales currently living in the atlantic ocean off cape cod, massachusetts

The accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. the accompanying figure shows the percent of selected dna sequences that match between a chimpanzee and other primates. these data support the hypothesis that the figure shows the percentage of selected d n a sequences that match between the chimpanzee and other primates. the human has an almost 98 percent match, the gorilla has an almost 97 percent match, the orangutan has a 96 percent match, the gibbon has an almost 95 percent match, and the old world monkey has an almost 92 percent match. chimpanzees and gibbons are the most closely related the chimpanzee's closest surviving relative is humans orangutans are the primates least closely related to chimpanzees old world monkeys and gibbons are the most closely related

Connection compare and contrast genetic engineering to the process of natural selection. select all statements that are true.