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Q1. The -10 and -35 sequences in bacterial promoters are separated by about two turns of the DNA double helix (remember genetics?). How do you think transcription would be affected if a deletion were introduced such that the -35 sequence was moved to the -29 position? Q2. Why was the […]

A mutation in a gene disrupts paracrine signaling from a subset of cells in the pancreas. Which of the following mutant phenotypes is consistent with the information above? A. A defect that affects functions all over the bodyB. A defect affects only the pancreatic cells that are secreting the moleculeC. […]

In a theoretical operon, the genes A, B, C, and D represent a repressor gene, a promoter sequence, an operator, and the structural gene (enzyme) ¦but not necessarily in that order. The enzyme encoded by this operon is involved in the synthesis of a theoretical molecule (TM). You are not […]

1. Some people believe that “all you are” is determined by the types and amount of neurotransmitters that ooze through your synaptic gaps. Do you think that all of your thoughts, hopes, dreams and aspirations are results of physiological processes; your love, hate, anger and memories are only at the […]