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- Differential fitness is the third of Darwin's four postulates for natural selection. It states that survival and reproduction rates vary between individuals. Fitness differentals are widespread and detectable throughout nature. This fitness differential is visible in several ways, and it can be detected throughout nature. It can be based on behavioral differences that can act with or against environmental changes; one notable example was a 2014 study of snowshoe hares, where researchers found that white snowshoe hares did not change their behavior due to increased snow melt. Subsequent research found that brown hares survived and bred more than the white snowshoe hares. Differential fitness can also be applied between species. Researchers found that the Neotoma macrotis wood rat in the California woodlands was responding to climate change by moving into a hybrid zone, and this gave it an advantage over the competing Neotoma fuscipes Differential fitness can also apply to multiple traits at once and at unequal levels. A study with Linum pubescens found that its floral traits were based on multiple different fitness factors. Differential fitness can also be based on the sex of organisms. Researchers found that there were differential survival rates between mothers and fathers in the mid-nineteenth century in Utah. (en)
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- Differential fitness is the third of Darwin's four postulates for natural selection. It states that survival and reproduction rates vary between individuals. Fitness differentals are widespread and detectable throughout nature. This fitness differential is visible in several ways, and it can be detected throughout nature. It can be based on behavioral differences that can act with or against environmental changes; one notable example was a 2014 study of snowshoe hares, where researchers found that white snowshoe hares did not change their behavior due to increased snow melt. Subsequent research found that brown hares survived and bred more than the white snowshoe hares. Differential fitness can also be applied between species. Researchers found that the Neotoma macrotis wood rat in the Cal (en)
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- Differential fitness (en)
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