Suppose a primer initiates the replication process in E. Coli and forms a 20bp (base pair) long stretch. Assume an error rate of 2/1000bp in primer that is taking place only in the lagging strand of DNA during replication. How many errors would you expect in the replication of 3800000bp […]

Q. In an experiment you are studying a neuron that receives synaptic inputs from two other neurons: one from neuron A and one from neuron B. Synaptic transmission from neuron A opens Ca2+ channels in the postsynaptic neuron, whereas neuron B opens Cl- channels. Imagine that ECa = +200 mV, […]

Chelsea, age 14, recently had a colectomy. Her colon was lined with thousands of polyps. Pathology reported that these polyps were adenomas and a diagnosis of familial adenomatous polyposis (FAP) was made. Her 35-year-old mother and 38-year-old father are reported to be healthy. In fact, her father boasts that he […]

How would genetic variation be affected if during meiosis I maternal chromosomes always lined up together on one side of the metaphase plate and paternal chromosomes always lined up on the other side (ignoring the effects of crossing over)? a. Gametes would contain either maternal chromosomes only or paternal chromosomes […]