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Evolution is not the same as adaptation or natural selection. Natural selection is a mechanism, or cause, of evolution. Adaptations are physical or behavioral traits that make an organism better suited to its environment. Heritable variation comes from random mutations. Random mutations are the initial cause of new heritable traits.
Creationism vs. Evolution. Creationism or Intelligent Design is the belief that life and the universe were created by a supernatural being (an "intelligent designer"), an omnipotent, benevolent God. Evolution is the process by which different kinds of living organisms developed and diversified from earlier forms during the history of the Earth.
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16 de abr. de 2024 · Posted April 16, 2024. While you’ve probably heard of the Triassic, Jurassic, and Cretaceous periods by way of their most charismatic animals, the dinosaurs, other units of geologic time are less well known. The Siderian Period, for example, rarely makes headlines because it is, by definition, old news – 2.5-billion-year-old news.
The evidence for evolution. In this article, we'll examine the evidence for evolution on both macro and micro scales. First, we'll look at several types of evidence (including physical and molecular features, geographical information, and fossils) that provide evidence for, and can allow us to reconstruct, macroevolutionary events.
The definition. Biological evolution, simply put, is descent with inherited modification. This definition encompasses everything from small-scale evolution (for example, changes in the frequency of different gene versions in a population from one generation to the next) to large-scale evolution (for example, the descent of different species from a shared ancestor over many generations).
Evolution, the flagship journal of the Society for the Study of Evolution, publishes articles in evolutionary biology focused on evolutionary phenomena and processes at all levels of biological organisation. What doesn’t kill you makes you stronger? Effects of paternal age at conception on fathers and sons.
