Sacks

Two good books: The Beak of the Finch by Jonathan Weiner (NS and adaptation in Finches) The Island of the Colorblind by Oliver Sacks (founder effect, genetic drift) You're right that natural selection and evolution are not synonymous, but it is not correct to say that natural selection ...

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... Lungs are fairly solid organs that contain networks of tubes. The tubes get progressively smaller and are terminated with the minute air sacks, alveoli. You can not see alveoli with the naked eye because they are microscopic. You may find this link useful http://en.wikipedia.org/wiki/Lung

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For an interesting case-study of the founder effect, check out "Island of the Colorblind" by Oliver Sacks

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... produce proteins that serve to encapsulate certain bacterium and allergens to protect the body from them. They can take the form of little globs, sacks, cysts, and sometimes protein fibers. She told me that there is a phenomenon that they see in the lab sometimes, that when the fibers or globs ...

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Yeah, I am agree with Victor. I read it too. Golgi Apparatus or Golgi complex or Golgi body is the sum of cisternae (flattened sacks or Golgi stacks) and vesicles that bud from them. And it is in animal cell as far as I know.

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