BIO 101 Chapter 10: Unit 10

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rosepanda334

22 Jan 2017

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Introduction: de ne evolution broadly and narrowly. a. Evolution: descent with modi cation, or a change in the genetic composition of a population from generation to generation. 22. 1: summarize the views of the following people or groups with regards to the origin of life: aristotle, the old testament, James hutton: gradualism; earth"s geologic features could be explained by gradual mechanisms, such as valleys being formed by rivers f. g. Charles lyell: the same geologic processes are operating today as in the past, and at the same rate. Jean baptist de lamarck: evolution occurs because organisms have an innate drive to become more complex: use and disuse: parts of the body that are used become larger and stronger, while those that are not used deteriorate ii. Inference #1: individuals whose inherited traits give them a higher probability of surviving and reproducing in a given environment tend to leave more offspring than other individuals. d.

Related Questions

There are two Alleles, A1 and A1. Suppose that in generation 1, the frequency of allele A2 is 0.3 and the A2A2 homozygotes have a relative fitness of 0.25. The other two genotypes have a relative fitness of 1. Consider when there is inbreeding, therefore do not assume random mating. Instead, assume that the value of Wright's F statistic is 0.5, as it would be under complete self- fertilization a) What are the frequencies in generation 2 after one generation of selection? b) What is the frequency of A2 in generation 2 after one generation of selection. With nonrandom mating use your answer from a to determine p'. c) provide a brief, intuitive explanation for why the frequency of A2 was reduced more with inbreeding?

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1. In dinosaurs, the gene for sharp teeth is dominant over the gene for dull teeth. a. Cross a homozygous sharp toothed dinosaur with a homozygous dull-toothed dinosaur. What are the phenotype and genotypes that are produced in the F1 generation? b. Cross two of the F1 offspring from question la. What are the phenotype and genotypes that are produced in the F2 generation? Give your answers in percentages. c. Cross al the phenotypes and genotypes of the F1 generation? Give your answers as a fraction. Cross a heterozygous sharp toothed dinosaur with a dull-toothed dinosaur. What are phenotypes and genotypes of the F1 generation? Give your answers as fraction.

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