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1. How much 4X SDS-PAGE sample buffer do you need to add to 10 ul of a cell extract to run it out on an polyacrylamide gel? 2. You wish to plate out 5 x 104 lymphocytes in a total of 2 ml for a focus forming assay. You dilute […]

Lillian Brown is an 80-year-old widow who lives in an older adult community. She lives alone and is independent in her daily activities, including driving. Her 55-year-old daughter lives nearby, phones daily, and visits frequently. Lillian has been remarkably healthy over the years despite her smoking for 60 years. She […]

Consider a species of dinosaurs and assume that females are XX and males are XY. Further assume that black scales, B, is a sex-linked dominant trait and that green scales, b, is the recessive trait. The gene resides on the X gene only. A female dinosaur with black scales and […]

1. Do you believe that evolution is progressive? Why or why not? What does the Great Chain of Being (or Scala Naturae) have to do with the notion of progress and goals in evolution? What view does current thinking in evolutionary biology overwhelmingly support? 2. Streptococcus pneumoniae, or pneumococcus, is […]