Search results
Results from the WOW.Com Content Network
e. Divergent evolution or divergent selection is the accumulation of differences between closely related populations within a species, sometimes leading to speciation. Divergent evolution is typically exhibited when two populations become separated by a geographic barrier (such as in allopatric or peripatric speciation) and experience different ...
v. t. e. Convergent evolution is the independent evolution of similar features in species of different periods or epochs in time. Convergent evolution creates analogous structures that have similar form or function but were not present in the last common ancestor of those groups. The cladistic term for the same phenomenon is homoplasy.
Here is a list of examples in which unrelated proteins have similar functions with different structure. The convergent orientation of the catalytic triad in the active site of serine and cysteine proteases independently in over 20 enzyme superfamilies. [252] The use of an N-terminal threonine for proteolysis.
Convergent thinking is the type of thinking that focuses on coming up with the single, well-established answer to a problem. [1] It is oriented toward deriving the single best, or most often correct answer to a question. Convergent thinking emphasizes speed, accuracy, and logic and focuses on recognizing the familiar, reapplying techniques, and ...
Divergent thinking. Divergent thinking is a thought process used to generate creative ideas by exploring many possible solutions. It typically occurs in a spontaneous, free-flowing, "non-linear" manner, such that many ideas are generated in an emergent cognitive fashion. Many possible solutions are explored in a short amount of time, and ...
The evolution of color vision in primates is highly unusual compared to most eutherian mammals. A remote vertebrate ancestor of primates possessed tetrachromacy, [1] but nocturnal, warm-blooded, mammalian ancestors lost two of four cones in the retina at the time of dinosaurs. Most teleost fish, reptiles and birds are therefore tetrachromatic ...
Double Diamond is the name of a design process model popularized by the British Design Council in 2005. [1] The process was adapted from the divergence-convergence model proposed in 1996 by Hungarian-American linguist Béla H. Bánáthy. [2][3] The two diamonds represent a process of exploring an issue more widely or deeply (divergent thinking ...
Overview. Evolution is a historical process, and the outcomes of history can be sensitive to the details of the interactions and events that preceded them. Contingency was especially emphasized by Stephen Jay Gould, particularly in his 1989 book Wonderful Life. [ 1 ][ 2 ] Gould used the thought experiment of rewinding the "tape of life" to the ...