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Q1. Describe how the presence of the appendix might be used to explain our common ancestry with other mammals, and determine what it may tell us about the dietary history of humans. Give an example with the response. Q2. Species have been traditionally characterized as “primitive” and “advanced.” For example, […]

A nucleotide site is polymorphic with C and G in a plantspecies. Currently, there are 80, 240 and 180 individual plants with CC, CG, and GG genotypes, respectively, in the entire population. 1. What is the frequency of allele G in the current generation? 2. If mating (pollination) occurs randomly […]

The Meselson-Stahl experiments were groundbreaking studies in molecular biology. Some of the clarity of the centrifugation results was due to the that the DNA was fragmented during handling (although the experimenters did not know it at the time). As quoted in Davis, Stahl said that pipetting DNA was like “throwing […]

The survival of viruses is a great example of natural selection and survival of the fittest. One such example is HIV. HIV reproduces very quickly (about 10 million new viruses per day. HIV lacks the proteins which repair mutations, and therefore there will be many mutations resulting from this rapid […]