BIO 120 Final Exam Review

BIO 120 Final Exam Review - Fall 2009 Sarah and Yuree

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1 Fall 2009 Sarah and Yuree bio120sileaders@gmail.com BISC 120 SI-Final Exam Review www.usc.edu/si The first part of the review is organized in the form of practice essay questions which bring some of the overarching themes of this course together. 1. Evolution has been essential in the continued development of many different organisms. Discuss 1- Darwin’s theory of evolution, 2- criteria for evolution, and 3- specific examples of adaptations when evolution has contributed to the survival of a species. 1. Darwin’s theory a. The 3 components: i. ii. iii. b. Darwin called it ― ______ _____________‖ – meaning living things sharing a __________ _____________ undergo processes like natural selection to give rise to new species that inherit desirable traits. c. Evolution occurs in individuals / populations over a period of time. d. Some terminology to know: a. _____Evolution i. fundamental unit of organization in nature b. _____Natural selection ii. localized group of individuals of the same species c. _____Artificial selection iii. change in allele frequencies in a population over time (change below the species level) d. _____Homology iv. given a series of assumptions, allele frequencies and genotypic frequencies will not change between generations (another way of putting it: both allele and genotypic frequencies in a population remain constant unless specific disturbing influences are introduced) e. _____Convergent evolution v. evolution of different structures from a common ancestor f. _____Microevolution vi. the independent evolution of similar features in different lineages g. _____Macroevolution vii. change above the species level h. _____Divergent evolution viii. selective breeding of domesticated plants and animals to encourage the occurrence of desirable traits i. _____Population ix. descent with modification (the idea that living species are descendants of ancestral species that were different from present-day ones) j. _____Hardy-Weinberg principle x. structures or sequences shared through descent from common ancestor (these provide support for evolution – how?) k. _____Species xi. differential success in survival, mating, and reproduction 2. Hardy-Weinberg Equilibrium a. A population that is / is not evolving is said to be in Hardy-Weinberg equilibrium. b. What are we assuming about a population in Hardy-Weinberg equilibrium? i. ii. iii. iv. v. 3. Examples a. Nonvascular Vascular plants i. Characteristics of nonvascular plants Also known as _____________ Lack ___________ _______ Dominant ________________ stage of life cycle Anchored by ___________ (instead of roots) ii. Characteristics of vascular plants Have ____________ __________. Why is this significant?
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2 Dominant ______________ stage Two types of vascular plants o Seedless o Seed What is the function of a seed? Two types of seed plants: Gymnosperms Angiosperms Examples Ginko, conifers (pines, fir, redwood) Flowering plants, nuts, fruit and vegetable plants Both -reduced gametophytes -heterospory- two types of that produce two types of spores – megasporangia produce megaspores which develop into female / male gametophytes and microsporangia produce microspores, which develop into female / male gametophytes -ovules – contain , ________________, and ________________ -pollen -seeds Integuments
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This note was uploaded on 10/23/2010 for the course BISC 120 taught by Professor Webb,wetzer,? during the Fall '07 term at USC.

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BIO 120 Final Exam Review - Fall 2009 Sarah and Yuree

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