Francisco J. Ayala's Am I a Monkey?: Six Big Questions about Evolution PDF

By Francisco J. Ayala

ISBN-10: 0801899389

ISBN-13: 9780801899386

Regardless of the continuing cultural controversy in the US, evolution is still a cornerstone of technology. during this ebook, Francisco J. Ayala—an evolutionary biologist, member of the nationwide Academy of Sciences, and winner of the nationwide Medal of technological know-how and the Templeton Prize—cuts to the chase in a bold try and tackle, in nontechnical language, six perennial questions on evolution:

• Am I a Monkey?
• Why Is Evolution a Theory?
• what's DNA?
• Do All Scientists settle for Evolution?
• How Did lifestyles Begin?
• Can One think in Evolution and God?

This to-the-point ebook solutions each one of those questions with strength. Ayala's sometimes biting essays refuse to lend credence to disingenuous rules and arguments. He lays out the fundamental technology that underlies evolutionary concept, explains how the method works, and soundly makes the case for why evolution isn't a probability to religion.

Brief, incisive, topical, authoritative, Am I a Monkey? will take you an afternoon to learn and a life-time to ponder.

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5 The size of the nucleus (full-width-halfmaximum, in arcsec) as a function of the wavelength of the light (From data published by Dubus et al. 02 0 0 5000 10000 15000 Wavelength (Angstroms) The question of whether the color gradient was the result of abundance differences in the stars or of age differences was settled by the ultraviolet measurements made by Dubus et al. (1999). The very high uv flux indicates that there is a population of very young stars concentrated to the center of the compact nucleus.

Harvard Obs. : AJ 101, 1663 (1991) 4 Structure Chapter 5 The Nucleus The semi-stellar nucleus of M33 has long been an intriguing if enigmatic feature of that otherwise straightforward galaxy. 65, somewhat bluer than that of a globular cluster. 54 for the nucleus, after subtraction of the nearby disk luminosity. 2, which made it brighter than any of M33’s globular clusters. 05, which indicated a population with an intermediate average age. Interest in the nucleus increased significantly when it was found that the nucleus coincided in position with M33 X-8, the most luminous persistent X-ray source in the entire Local Group, with an X-ray luminosity of 1039 ergs/s (Long et al.

Used by permission, copyright AAS Although red-sensitive plates required much longer exposures at that time, Hubble was able to determine that the Cepheids had intermediate colors (like the sun’s) and this further confirmed their identity as normal Cepheids. Having established that his stars were Cepheids, Hubble then plotted their maximum magnitudes against the logarithm of their periods and obtained a periodmagnitude relation similar to that of the Cepheids in the Small Magellanic Cloud. Using Harlow Shapley’s latest version of that (Shapley 1925) and using a simple process of superimposing the diagrams and fitting them by eye, he concluded that the Cepheids in the two galaxies were similar and that the relative distances could be derived by the comparison.

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Am I a Monkey?: Six Big Questions about Evolution by Francisco J. Ayala


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