In beadle and tatum's auxotroph experiments, the arginine auxotrophs that had a mutation in the arg3 gene required the addition of what compound to grow?

Arginine

Explanation:

The biochemical pathway for synthesis of arginine from its precursor includes the formation of ornithine from precursor. Ornithine serves as precursor for formation of citrulline which is then converted into arginine.

The "arg-3" mutants of Beadle and Tatum experiment were defective in the gene that code for the enzyme required to convert citrulline into arginine. These mutants could grow only when arginine was supplemented in the medium.

prophase: we can observe the chromosomes to coil up and condense. they become visible. nuclear membrane and envelope disintigrate.s

metaphase: chromosomes align at the center, the metaphase plate. spindle fibers attach to centromeres of the sister chromatids. they meet at kinetochores.

anaphase: sister chromatids are pulled towards each opposing centromere, set on different poles.

telophase: chromosomes are now clustered up only on either sides of the cell. nuclear membranes reform, and a new cell wall forms along the cell plate. this will lead to cytokinesis, the process that divides the cell membrane and forms the cell wall.

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms