RG chap 22 Essay - 2088 Words

Name _______________________ Period _________ Chapter 22: Descent with Modification: A Darwinian View of Life As you study this chapter, read several paragraphs at a time to catch the flow of ideas and understand the reasoning that is being described. In some places, the text describes a narrative or story of events that led to Darwin’s theory of evolution. Therefore, first read the narrative to absorb the big picture and then return to answer the few questions that accompany this material. Overview 1. Define evolution broadly and then give a narrower definition, as discussed in the overview. Evolution: Descent with modification; the idea that living species are descendants of ancestral species that were different from the†¦show more content†¦inheritance of acquired characteristics: This idea states that an organism could pass these modifications of use and disuse to its offspring. 8. Although Lamarck’s mechanism of evolution does not explain the changes in species over time, his thinking has been influential. What is considered to be the great importance of his ideas? Lamarck recognized that the match of organisms to their environments can be explained by gradual evolutionary change rather than special creation. Concept 22.2 Descent with modification by natural selection explains the adaptations of organisms and the unity and diversity of life 9. Charles Darwin proposed that the mechanism of evolution is natural selection and that it explains how adaptations arise. What are adaptations? Give two examples of adaptations. Adaptations are inherited characteristics of organisms that enhance their survival and reproduction in specific environments. Possible examples include the mottled coloration of a fawn that allows it to blend with its environment, or the sharp talons and beaks of birds of prey so well suited for predation. 10. Explain the process of natural selection. In the process of natural selection, individuals that have certain inherited traits tend to survive and reproduce at higher rates than other individuals because of those traits. Copyright  © 2011 Pearson Education, Inc. -2- 11. Let’s try to summarize Darwin’s observations thatShow MoreRelatedIntroduction to Network Implementation Essay6037 Words   |  25 Pagesreplacing it with Cat-6 in the imminent future should you choose this direction. TWISTED PAIR Table [ 1 ] * Two wires that carry the data signals (one conductor carries a positive signal; one carries a negative signal). They are made of 22 or 24 gauge copper wiring. * Two wires are twisted to reduce the effects of electromagnetic interference (EMI) and crosstalk. Because the wires are twisted, EMI should affect both wires equally and can be cancelled out. * Multiple wire pairs areRead MoreRelevant Cost for Decision Making Chapter 1312139 Words   |  49 Pagesoverhead per box of Chap-Off would be $0.50, as shown below: |Total manufacturing overhead cost per box of Chap-Off |$1.40 | |Less fixed portion ($90,000 à · 100,000 boxes) |  0.90 | |Variable overhead cost per box |$0.50 | The total variable costs of producing one box of Chap-Off would be: Read MoreA Concise Guide to Market Research Using Spss71933 Words   |  288 Pages . . . . . . . . . . . . . . . . . . . References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 1 2 4 5 7 8 8 11 11 12 13 13 14 15 16 16 19 20 20 20 21 21 21 22 22 23 2 xiii xiv Contents 3 Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Introduction . . . . . . . . . . . . . . . . . . . . . .