Evolutionary Analysis

answers Charles Darwin was the first scientist to suggest that species had changed over time. a. True b. False Answer False What has come to be known as the "modern evolutionary synthesis" began in the 1930s and 1940s. What did it involve? a. The incorporation of the ideas of developmental biology into evolutionary theory b. The development of statistical analysis in evolution c. The fusion of biology and chemistry d. The integration of genetics, systematics, and paleontology, allowi...

Adaptation Answer a trait or integrated suite of traits that increases the fitness of its possessor • Differences among populations or species are not always adaptive • Not every trait of an organism use of every trait by an organism is an adaptation • Not every adaptation is perfect Example of testing various hypotheses of adaptions Answer -looked at tick load, mean number of wounds, and changes in earwax on cattle with and without birds, adaptationist programme Answer An...

Evolutionary Analysis Final questions with correct answers

Successful artificial selection, such as that practiced by plant and animal breeders to modify their crops and livestock, depends on which of the following? Answer All of these are necessary for artificial selection to take place. Darwin's postulates must be true for selection to occur, whether it is artificial selection or natural selection. Thus, for artificial selection to occur, the population must have variation in the desired trait, the variation must be heritable, and breeders must b...

Homologous genes Answer Genes that share a recent common ancestor based upon phylogenetic analysis Orthologous genes Answer homologous genes that are found in different species that are due to speciation events Paralogous Genes Answer homologous genes that are due to a duplication event in a particular species Brachydactyly Answer Shortness of the digits caused by autosomal dominant allele (BB, Bb) - Short Digits Godfrey Hardy Answer Discovers why Brachydactyly is not more prevalent...

genetic variation Answer differences in alleles or genotype as shown by various phenotypes How was genetic variation studied early on? Answer they studied proteins, because different proteins are produced by genetic variations. (doesn't show variation in substitutions though) allele example Answer B, b genotype example Answer BB, Bb, bb environmental variation Answer if a phenotype changes because of the environment it is in, there is environmental variation -for example, someone w...

Evolutionary Analysis Chapter 3 Study Questions with correct answers

Evolutionary Analysis questions with correct answers

Describe in your own words the difference between an experimental study, an observational study, and a comparative study. What sorts of questions are they each suited for (i.e., why don't researchers always use the experimental method)? Give an example of each type of study from this chapter. Answer An experimental study is one in which the researchers directly manipulate a variable of interest, typically changing it in one group of individuals and leaving it unchanged in a control group. The e...

Evolutionary Analysis Ch10 questions with correct answers