Refer to this text to answer the following question. to map genes of a bacterial strain, conjugation must be interrupted at given times. suppose you have hfr cells of genotype a+b+c+d+e+strs and f- cells of genotype a-b-c-d-e-strr and you combine these two cultures in liquid medium in four blenders at time 0. after intervals of 3, 6, 9, and 12 minutes, you turn on successive blenders. the resulting cultures were then plated on medium containing streptomycin. why?

your answer should be c, it seems to be the only one that makes sense. mark me branliest : )

american political culture includes a plenty of focus views and preferences. not all westerns experience the same opinions, of course, but the large preponderance promises to these general ideas, including equality, justice, freedom, individualism, integrity, and difference.

the united states is a democratic republic. residents elect representatives to governmental, nation, and local administration; those deputies create the regulations that command u.s. community. although emptiness in u.s. law needs it, in usage, the administrative system is ruled by executive factions.