高三英语教案 Unit 4 Green World (Reading and Integrating skills)

Gregor Mendel Flowers and peas Many characteristics were passed on from one generation to the next, without influence by the environment. His research gave birth to the science of genetics.
Gote Turesson A wild plant found on the Swedish west coast Found evidence for the existence of stable varieties within species in nature. He showed that differences between plants of one species occurred as a result of the environmental conditions in their habitat.
The text can be divided into four parts
Part I Pa1-3: Darwin and his research.
Part II Pa4-5: Mendel and his experiment.
Part III Pa6: Turesson and his study
Part IV Pa7: the importance and significance of the research of the three.
Important sentences in the passage
1. It was Darwin’s visit on the Beagle to the Galapagos Isles that gave him the key to his new theory.
2. Back home, in England, Darwin realized that differences in habitat could lead to different species in birds as well as in plants.
3. As a result of Darwin and Mendel’s research, scientists of the nineteenth century formed the belief that that influence of the environment was behind the development of new species.
4. It would take a next generation of scientists to bring the importance of the environment on species back in view.

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