Evolution by natural selection is one of the best-validated theories in the history of science. This theory has two main points. First, all life forms on earth are related and connected. Second, this diversity of life is the product of modification by natural selection, where some traits were...
Word History First Known Use 14th century, in the meaning defined above Time Traveler The first known use of natural science was in the 14th century See more words from the same century Dictionary Entries Near natural science natural rubber natural science natural selection See More ...
Natural selection, process in which an organism adapts to its environment through selectively reproducing changes in its genotype. It reduces the disorganizing effects of migration, mutation, and genetic drift by multiplying the incidence of helpful muta
Theory shows how sexual selection can exaggerate male traits beyond naturally selected optima and also how natural selection can ultimately halt trait elaboration. Empirical evidence supports this theory, but to our knowledge, there have been no experime
The meaning of NATURAL SCIENCE is any of the sciences (such as physics, chemistry, or biology) that deal with matter, energy, and their interrelations and transformations or with objectively measurable phenomena. How to use natural science in a sentence.
“Natural selection is a mechanism for generating an exceedingly high degree of improbability,” which is seen more often, is a summary form of Fisher’s idea (not a verbatim quote) written by Julian Huxley, ibid, 5. Science quotes on: | A Priori (26) | Become (821) | Biology (232)...
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meaning of lifemutationnatural selectionproton tunnelingquantum indeterminismquantum transitiontautomeric shiftThis chapter contains sections titled: IntroductionA Short History of the Debate in Philosophy of BiologyReplies to My PaperThe Quantum Indeterministic Basis of MutationsMutation and the Direction of ...
Evolution - Natural, Sexual, Artificial: Natural selection can be studied by analyzing its effects on changing gene frequencies, but it can also be explored by examining its effects on the observable characteristics—or phenotypes—of individuals in a po
Epimutations are heritable changes in gene function due to loss or gain of DNA cytosine methylation or chromatin modifications without changes in the DNA sequence. Only a few natural epimutations displaying discernible phenotypes are documented in plants