Evolutionary Analysis Chapter 2 end of chapter questions with correct answers

Sections 2.1 - 2.5 summarize evidence for Evolution. Some evidence had been available to Darwin and his contemporaries, but the majority of the evidence came later, in the 20th century. For example, Darwin was aware of the following: Answer Vestigial structures Geological evidence for mass extinctions Succession in the fossil record Structural and developmental homologies The evidence from biogeography, based on occurrence of closely related species in groups of islands (such as the Galapagos) The age of Earth known to be much greater than previously believed to be (6,000 years) Much of the significant evidence came after Darwin. For example: Answer Mendel's research and the concept of genes (which was the key to the proposed Darwin's theory of Evolution by the means of natural selection) Transitional fossil forms Direct observation of populations in the wild changing through time (however, Darwin did know about, and paid close attention to, the changes that animal breeders can cause in domestic animal populations) Genetic and molecular information of any kind, including vestigial molecular traits, molecular homologies, and basic genetics Radiometric dating and absolute dates for the geologic time scale Consider the experiment in which people bred mice to run long distances on wheels. We presented the results as evidence that two dozen generations of selective breeding had altered the experimental generation. How does the control strain support this interpretation? If the scientist had simply compared the behavior of the 24th ecperimental generation to the behavior of th