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PBS - Isn't evolution just a theory? PBS - Who was Charles Darwin?

PBS - Isn't evolution just a theory? PBS - Who was Charles Darwin?

Biology 2e
Biology 2e
2nd Edition
ISBN:9781947172517
Author:Matthew Douglas, Jung Choi, Mary Ann Clark
Publisher:Matthew Douglas, Jung Choi, Mary Ann Clark
Chapter19: The Evolution Of Populations
Section: Chapter Questions
Problem 4RQ: What is the difference between micro- and macroevolution? Microevolution describes the evolution of...
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PBS - Isn't evolution just a theory? PBS - Who was Charles Darwin?
Transcribed Image Text:PBS - Isn't evolution just a theory? PBS - Who was Charles Darwin?
Darwin and the Theory of Evolution - V2 So how and why did Charles Darwin come to develop his ground-breaking Theory of Evolution? In Darwin's lifetime the Christian biblical idea that about 6,000 years ago god created all the species exactly as we see them, was the accepted belief. When he was only 22, Darwin was the naturalist on the HMS Beagle. He voyaged around the world for 5 years, with numerous long stops to and observe. These observations lead him to conclude that Biblical stories could Darwin made many that caused him to ask key Some that he later used to support the Theory of Evolution included: Darwin's 5 Observations Key Questions 1. Rodents in South America and were very from Why are similar organisms clustered in the same regions? European rodents. 2. The Why are similar living and fossilized glyptodont looked like a armadillo. organisms found in the same region? 3. The tortoises, finches and plants on the looked like the nearest Why did island organisms look like those from the nearest mainland? 4. Each finch specialized in a and had a size and shape. Why was there a lot of biodiversity on such small islands? 5. Genetic are passed from parents to Did nature have a selection process? offspring and there was a lot of in the offspring. Many scientists in Darwin's time knew that simple organisms developed gradually and changed to more complex organisms, but they did, these changes occurred. They were also arguing about the age of the Earth, but they knew it was much more than 6,000 years old. The key idea for Darwin was in proposal that populations produced than the environmental resources could support. There was for food, water and space that lead to weakness, starvation or death by disease. Darwin used the term to describe the process that only the offspring for the environment would survive. We now define natural selection as the levels of and reproduction of individuals due to differences in Natural selection, in a nutshell: Yum! Green beetles! Our favorite 按短按 **** Green beats have been selected against and brown underwent In Darwin's famous book, On the Origin of Species, he described how due to natural selection. Darwin did_________use the word because he thought it indicated progress or improvement of a species towards a goal. Theory of Evolution Summarized: Individuals in a population that had the best traits to other organisms in the local environment were fittest. there would be a in the population as only the best or fittest, individuals survived and reproduced.
Transcribed Image Text:Darwin and the Theory of Evolution - V2 So how and why did Charles Darwin come to develop his ground-breaking Theory of Evolution? In Darwin's lifetime the Christian biblical idea that about 6,000 years ago god created all the species exactly as we see them, was the accepted belief. When he was only 22, Darwin was the naturalist on the HMS Beagle. He voyaged around the world for 5 years, with numerous long stops to and observe. These observations lead him to conclude that Biblical stories could Darwin made many that caused him to ask key Some that he later used to support the Theory of Evolution included: Darwin's 5 Observations Key Questions 1. Rodents in South America and were very from Why are similar organisms clustered in the same regions? European rodents. 2. The Why are similar living and fossilized glyptodont looked like a armadillo. organisms found in the same region? 3. The tortoises, finches and plants on the looked like the nearest Why did island organisms look like those from the nearest mainland? 4. Each finch specialized in a and had a size and shape. Why was there a lot of biodiversity on such small islands? 5. Genetic are passed from parents to Did nature have a selection process? offspring and there was a lot of in the offspring. Many scientists in Darwin's time knew that simple organisms developed gradually and changed to more complex organisms, but they did, these changes occurred. They were also arguing about the age of the Earth, but they knew it was much more than 6,000 years old. The key idea for Darwin was in proposal that populations produced than the environmental resources could support. There was for food, water and space that lead to weakness, starvation or death by disease. Darwin used the term to describe the process that only the offspring for the environment would survive. We now define natural selection as the levels of and reproduction of individuals due to differences in Natural selection, in a nutshell: Yum! Green beetles! Our favorite 按短按 **** Green beats have been selected against and brown underwent In Darwin's famous book, On the Origin of Species, he described how due to natural selection. Darwin did_________use the word because he thought it indicated progress or improvement of a species towards a goal. Theory of Evolution Summarized: Individuals in a population that had the best traits to other organisms in the local environment were fittest. there would be a in the population as only the best or fittest, individuals survived and reproduced.
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