Parents were invited into the class to discuss a lab on Natural Selection. My mother, being a Biology Major, had some useful information to add to the conversation, making me feel like an idiot on the subject. We were shown two pictures of average faces side-by-side and told to write down which was the better. (Some had slight changes in width, etc.) The results revealed the personal preferences in choices for mates. Many of us preferred the female-looking face while only one or two preferred masculine traits.
There was a discussion about the articles read the night prior. Often people prefer faces with more symmetry and masculine features than others, which promotes the process of natural selection. Unwanted traits die out with the people due to them being unwanted as a mating partner.
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