Pressures

... might lead to individuals without phenotypic plasticity edging out the individuals that still have it. Basically, the environment will put certain pressures on the population. If the environment varies during an individual's lifetime, no specific phenotype will become fixed in the population because ...

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... and wouldn't see the green of a green deer anyway (or the greens of the surrounding environment) probably is a factor here also. Evolutionary pressures are often complex and phenotpes often refiect the influence of various selective pressures over long periods of time. If you're looking for ...

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... vaccines primarily stems from two related factors. First, HIV is highly mutable. Because of the virus' ability to rapidly respond to selective pressures imposed by the immune system, the population of virus in an infected individual typically evolves so that it can evade the two major arms ...

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... success, then the genetic composition of the population is altered, thus evolution. The mechanism for evolutionary change in which environmental pressures cause certain genetic combinations in a population to become more abundant; genetic combinations best adapted for present environmental conditions ...

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... their offspring's genetic makeup by their "decisions", which may be based on learning. Their decisions will bring different evolutionary pressures to their offspring, which in turn will be selected under those different pressures, and the surviving genes may then be different. We are ...

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