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Evolutionary theory of dating

Hominid Footprints. The team of experts came to the conclusion that indeed, the impressions had been made by ancient human ancestors 5. They had been made during the Miocene era, at a time when the entire Mediterranean Sea had dried up. The scientific world was faced with the notion that these small footprints on the Greek island would now be the earliest-known human-like prints in the world — far older than the prints previously found in Africa, from Laetoli in Ethiopia, which were made 3.

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Evolutionary Thought Before Darwin (Stanford Encyclopedia of Philosophy)

Evolutionary psychologists who study mating behavior often begin with a hypothesis about how modern humans mate: say, that men think about sex more than women do. Then they gather evidence — from studies, statistics and surveys — to support that assumption. Lately, however, a new cohort of scientists have been challenging the very existence of the gender differences in sexual behavior that Darwinians have spent the past 40 years trying to explain and justify on evolutionary grounds. Of course, no fossilized record can really tell us how people behaved or thought back then, much less why they behaved or thought as they did. Nonetheless, something funny happens when social scientists claim that a behavior is rooted in our evolutionary past. Assumptions about that behavior take on the immutability of a physical trait — they come to seem as biologically rooted as opposable thumbs or ejaculation.

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Molecular clock

Amino acids are the building blocks of proteins. At the death of the creature that they were in, amino acids begin decomposing at varying rates. A major difficulty in applying this dating method is that, of the twenty amino acids, some decompose much more rapidly than others.

In response to problems in our environment, we adapt both physically and psychologically to ensure our survival and reproduction. Sexual selection theory describes how evolution has shaped us to provide a mating advantage rather than just a survival advantage and occurs through two distinct pathways: intrasexual competition and intersexual selection. Gene selection theory, the modern explanation behind evolutionary biology, occurs through the desire for gene replication.