Natural selection results in the fixation of these advantageous variations in the population, leading to greater adaptability to and reproductive success in the environment. Thus, natural selection drives the evolutionary engine. Natural selection can be of two types, based on its effect on th...
The upper panel is a diagrammatic representation of the male and female phenotypes resulting from male-limited predation in comparison to those resulting from sexual selection on males. Sexual selection (left images) results in enlarged male mandibles, which require a masculinized head and prothorax...
When we examined male and female ornamentation separately, however, both were positively associated with habitat openness in addition to snout-vent length and head SSD. These results suggest that natural selection constrains the evolution of elaborate ornamentation in both sexes as well as sexual di...
How will the struggle for existence, discussed too briefly in the last chapter, act in regard to variation? Can the principle of selection, which we have seen is so potent in the hands of man, apply in nature? I think we shall see that it can act most effectually. Let it be borne ...
This is where one of the bestnatural selection examplescame into play. Some species of fish that lived near the coast developed a strange mutation: the ability to push themselves along in the mud and sand on the shore with their fins. ...
Evidence of positive selection acting on genes is beginning to accumulate. Many coding regions in the human genome do not show an excess of low-frequency alleles. This indicates that balancing selection might be more common than generally perceived. ...
Firstly, natural selection may be a dominant force in AI development. Competition and power-seeking may dampen the effects of safety measures, leaving more “natural” forces to select the surviving AI agents. Secondly, evolution by natural selection tends to give rise to selfish behavior. While ...
This is defined more generally here and several theorems are presented. It is shown that these results can be used to simplify the analysis of nonorthogonal designs, many of which exhibit some degree of adjusted orthogonality. 展开 关键词: CiteSeerX citations What is frequency-dependent selection ...
In goat breeds, the domestication followed by artificial selection for economically important traits have shaped genetic variation within populations, leading to the fixation of specific alleles for specific traits. This led to the formation and evolutio
natural selection by several biotic (host plants) or abiotic (climate) factors, which support maintenance of the gene pool of wild populations in spite of the introduction of captive wasps. Therefore, the impact of large-scale release is reduced. Our study suggests thatA. gifuensisis a good ...