Answer: <em>Modernization theory</em>
Explanation:
Modernization theory is known to be utilized in order to describe modernization process within a society. Modernization tends to refer to the state of continuous transition from a traditional to contemporary society. Modernization theory was originated from notion of Max Weber who was a German sociologist, he provided the ground work for modernization paradigm which was further developed Talcott Parsons.
<span>Charles Darwin noticed that among the same species there were variations in traits based upon geographical location. These changes may have evolved from climate differences, predator/prey relationships and food sources. This particular experiment was intended to duplicate natural selection by demonstrating the concepts with artificial selection. The result was that over time, new traits could be bred for. Although there may be more than one correct answer here, the best answer is the first; desirable traits can be selected and bred in offspring.</span>
Ray Blanchard, easy wikipedia search; https://en.wikipedia.org/wiki/Fraternal_birth_order_and_male_sexual_orientation
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