Natural selection will favor those birds that leave the most descendants to future generations. At first thought we might hypothesize that natural selection favors a clutch size that is the physiological maximum the bird can lay. We can test this hypothesis by taking eggs from nests as they are...
So, during the Pleistocene epoch...let's take the now-extinct American cheetah, for instance.We believe it played a pivotal role in the evolution of the pronghorn antelope—the antelope's amazing speed, to be exact, because natural selection would favor those antelope that could outrun a che...
同时,因为慢性的营养不良普遍存在于大多数的人类历史中, genetics evolved to favor fat storage. 遗传基因朝着脂肪存储方向进化。 So when did body fat become problematic? 那么,身体脂肪什么时候开始成为了问题? The negative impacts of being overweight were not even noted in medical literature 超重的消极影响...
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aI think to some extent, a bias to favor the self, where the self could be people who look like me, people who act like me, people who have the same taste as me, is a very strong human bias. It's what one would expect from a creature like us who evolved from natural selection,...
This cold evolutionary logic was captured in this cartoon, which really does sum up a hundred of mate-selection research. The logic goes like this then: difference in the size of sex cells leads to differences in typical parental investment, leading to differences in the sorts of psychological ...
If glacial microbiomes are limited by liquid water, and the albedo-reducing properties of individual cells enhance melt rates, then natural selection should favor those microbes that melt ice and snow crystals most efficiently. Here we: (1) argue that natural selection favors a red color on ...
The most basic function of bodily fat is self-storage of food reserves. In prehistoric times, natural selection favoredgenotypesthat could endure harsh conditions by stocking the most fat. With chronic malnutrition being the norm for most of human history, genetics evolved to favor fat storage. So...
13. Where does the woman suggest David go for his next holiday? A. Australia. B. California. C. The Amazon. 听第9 段材料,回答第 14 至 17 题。 14. Why did Sarah make the phone call? A. To ask a favor. B. To pass on a message. C. To make an appointment. 15. Where is Sa...
同时,因为慢性的营养不良普遍存在于大多数的人类历史中, genetics evolved to favor fat storage. 遗传基因朝着脂肪存储方向进化。 So when did body fat become problematic? 那么,身体脂肪什么时候开始成为了问题? The negative impacts of being overweight were not even noted in medical literature 超重的消极影响...