BIOL 103 Study Guide - Quiz Guide: Volvox, Senescence, Pitx1
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An environmental stress causes some individuals to die based upon body size. During an individual organism"s lifetime, which of these is most likely to help the organism respond properly to changes in its environment: microevolution, change in allele or gene frequency, change in gene expression, change in average heterozygosity. Structures as different as horse hooves, bat wings, and whale flippers contain many of the same bones, these bones having developed from very similar embryonic tissues. How do biologists interpret these similarities: by identifying the bones as being analogous structures (this would be true also if. Scottish geologist charles lyell"s major contribution to darwin"s theory of evolution was : uniformitarianism. (earth is shaped by the same processes in play today, catastrophism, continental drift, exponential population growth, fancy pigeons. What plant, that has been cultivated by humans for millennia and artificially selected into a remarkable diversity of forms, gave us cauliflower and kohlrabi: teosinte, asparagus, duck weed, wild mustard.
