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You have identified a mutant E. coli strain that cannot synthesize histidine (His-).To determine the location of the his- mutation on the E. coli chromosome, interrupted mating experiment was performed with 5 different Hfr strains. The following chart shows the time of entry (minutes, in parentheses) of the wild-type alleles […]

Experimental Analysis: Introduction The experiment conducted involves the factor of vigilance when it comes to keep clear of the predators. Vigilance forms the part of the behavioral ecology and refers to an animal’s examination of its surroundings so that it can keep itself safe and at a good distance from […]

Environmental mointering of heavy metals in soil I know about heavy metals in soil but I don’t know how canwe mointering which method used for collected samples forheavy metals , what should be storage condition of soil for heavy metals and what type of container used for heavy metals afterthis […]

Terry catches a ray-finned fish from the ocean and notices that, attached to its flank, there is an equally long, snakelike organism. The attached organism has no external segmentation, no scales, a round mouth surrounded by a sucker and two small eyes. Terry thinks it might be a marine leech, […]