Parallel evolution, the evolution of geographically separated groups in such a way that they show morphological resemblances. A notable example is the similarity shown by the marsupial mammals of Australia to the placental mammals elsewhere. Through the
It occurs through mechanisms including natural selection and genetic drift, and can result in adaptations to environmental change or host immunity. Because of their short generation times and large population sizes, bacteria can evolve rapidly. Latest Research and Reviews Distribution of the four type ...
the fin-ray section of the fin would decline in size. Eventually, it would be lost and replaced by skeletal elements. As the animal spent more time out of water, the limbs were required to support the total body weight for longer periods, sonatural selectionwould favour a stronger and tigh...
BEIJING, Feb. 19 (Xinhua) -- A new study provides evidence suggesting that the evolution of modern birds commenced much earlier than previously believed, predating the extinction of dinosaurs. Published earlier this month in the journal Proceedings of the National Academy of Sciences, the study wa...
Proliferation-based karyotype selection in these epithelial lines modeled tissue-specific tumor aneuploidy patterns in patient cohorts in the absence of driver mutations. Hi-C-based translocation mapping revealed that arm-level events usually emerged in multiples of two via centromeric translocations and ...
Charles Darwin's publication of "On the Origin of Species" in 1859 was a game - changer in the history of biology. Darwin proposed the theory of evolution by natural selection, which states that species evolve over time through a process of differential survival and reproduction. Those organisms...
英语翻译24.The role of natural selection in evolution was formulated only a little more than a hundred years ago,and the selective role of the environment in shaping and maintaining the behavior of the individual is only beginning to be recognize
63. The role of natural selection in evolution was formulated only a little more than a hundred years ago, and the selective role of the environment in shaping and maintaining the behavior of the individual is only be- ginning to be recognized and studied. 【结构剖析】...
Overall, we demonstrate and discuss how glucose-aversion imposes a trade-off by favoring survivorship under natural selection in the presence of toxic baits, but it disrupts courtship under sexual selection. Rapid directional changes in the sexual communication system are expected to correct for the ...
These activities explore concepts of intra-specific diversity, genealogy and inheritance, natural selection, genetic drift, and systematics, using contexts that are familiar to students, and were articulated with the Portuguese official curriculum. Similar contents are present in elementary school curricula...