Test II

Test II - 1. (From the evolutionary time lecture). In terms...

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Unformatted text preview: 1. (From the evolutionary time lecture). In terms of impact on earth biodiversity and habitats, which of the following has had the greatest effect in the shortest evolutionary time? a. humans b. prokaryotes c. dinosaurs d. single celled protists e. birds 2. (From the evolutionary time lecture). Imagine LSA 191 divided into four equal sections from the beginning of the earth to present day. Based on our LSA 191 time scale, in which part of the room did most of earth's vertebrate (reptiles, amphibians, fish, mammals) biodiversity arise? a. before the first of the room b. between the first and second 's of the room c. between the second and third 's of the room d. during the last of the room e. where's LSA 191? 3. (From the evolutionary time lecture). Fossils from about 750-500 million ago (e.g., in the Burgess shale) show a remarkable array of invertebrate diversity, many of which no longer exist today. What evolutionary innovation directly led to this great diversity of invertebrates? a. the evolution of photosynthesis as a way of capturing light energy b. the evolution of multicellularity c. the evolution of organisms that were motile d. the evolution of organisms that could tolerate extreme conditions, like the Archaea e. text messaging that allow organisms to communicate with each other------------------------------------------------------------------------------------------------------- Questions 4-7 use the following information: In one of Mendels crosses, he used purple and white flower plants. When he crossed male purple flowered plants with female white flowered plants, the first generation (F1) offspring were all purple flowered. When these offspring were crossed together, the offspring (F2) were 705 purple flowered, and 224 white flowered. 4. In terms of early hypotheses regarding how traits are inherited, these overall results best support: a. Mendels view that traits are inherited as discrete particles b. the view that traits are blended from the mother and father each generation c. the view that traits are determined solely from the father d. the view that traits are determined solely from the mother e. all of the above are supported by these results 5. In terms of genetics, the trait for white flower color would best be termed: a. recessive b. dominant c. co-dominant d. hemizygous 1 6. Based upon these results, how many different genotypes would you predict should be present in the F2 generation? a. 1 b. 2 c. 3 d. 4 e. impossible to know 7. Based upon these results, what is the probability that if Mendel crossed more F1 purple flowered plants, that the next offspring in the F2 would be a white flowered plant?...
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This note was uploaded on 04/02/2008 for the course ASB 353 taught by Professor Repp during the Spring '08 term at ASU.

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Test II - 1. (From the evolutionary time lecture). In terms...

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