इंग्रजी मध्ये CONVERGENT EVOLUTION म्हणजे काय?
अभिसरण उत्क्रांती
अभिसरण उत्क्रांती विविध वंशांच्या प्रजातींमध्ये तत्सम वैशिष्ट्यांचे स्वतंत्र उत्क्रांतीचे वर्णन करते. अभिसरण उत्क्रांती सारख्याच स्वरूपाचे किंवा फलन असणारे समान रचना बनविते, परंतु ते त्या गटातील शेवटच्या सामान्य पूर्वजांत उपस्थित नव्हते. याच प्रसंगीसाठी आलंकारिक शब्द ग्रीमपासून त्याच स्वरूपातील homoplasy आहे. संक्रमणाचा उत्क्रांती म्हणजे उत्क्रांतीचा उत्क्रांती. फ्लाइंग कीटक, पक्ष्यांचे आणि चमचनेने सर्वत्र स्वतंत्ररित्या उड्डाण करण्याची क्षमता विकसित केली आहे. या उपयुक्त गुणधर्मांवर त्यांनी "एकत्र" केले आहे. अभिसरण उत्क्रांतीद्वारे उद्भवणारे तत्सम गुणधर्म असे म्हटले जाते की समान स्वरुपाच्या स्वरूपाचे किंवा गुणधर्मांमधे, पण सामान्यतः समान कार्यास नसले तरी, समान स्वरूपाचे कार्य. ब्रिटीश ऍनाटॉमिस्ट रिचर्ड ओवेन हे पहिले शास्त्रज्ञ होते जे समानता आणि बायोगॅस यांच्यातील मूलभूत फरक ओळखतात. बॅट आणि पेटेरोसॉर पंख हे समान रचनांचे एक उदाहरण आहेत, तर बॅट विंग मानवी आणि इतर स्तनपाती पिकाच्या मुळाशी जुळवून घेतो, विविध कार्ये पार पाडण्याखेरीज एक वडिलोपार्जित राज्य सामायिक करते.
इंग्रजी शब्दकोशातील convergent evolution व्याख्या
शब्दकोशमध्ये संक्रमित उत्क्रांतीची परिभाषा अशी आहे की, असंबंधित प्राण्यांमधील परस्पर समानतेचा उत्क्रांतीवादाचा विकास, ज्यात पक्ष आणि बागेच्या पंखांच्या उत्क्रांतीप्रमाणे समान वातावरण आहे.
«CONVERGENT EVOLUTION» संबंधित इंग्रजी पुस्तके
खालील ग्रंथसूची निवडीमध्ये
convergent evolution चा वापर शोधा. इंग्रजी साहित्यामध्ये वापराचा संदर्भ देण्यासाठी
convergent evolution शी संबंधित पुस्तके आणि त्याचे थोडक्यात उतारे.
1
Convergent Evolution: Limited Forms Most Beautiful
In this book, George McGhee describes the ubiquity of the phenomenon of convergent evolution and connects it directly to the concept of evolutionary constraint--the idea that the number of evolutionary pathways available to life are not ...
2
Science in Popular Culture: A Reference Guide
Convergent evolution is the appearance of similar structures in species that have
no direct evolutionary relationship. It happens when similar mutations, and
similar environmental pressures, produce similar adaptations in otherwise
unrelated ...
A. Bowdoin Van Riper,
2002
3
Molecular
Evolution and Phylogenetics
7B is caused by convergent evolution of amino acid sequences in these two
organisms. They also noticed that the cow and langur sequences share the same
amino acid at a number of sites, which are not present in other sequences (
uniquely ...
Masatoshi Nei, Sudhir Kumar,
2000
4
Comparative Vertebrate Endocrinology
However, the possibility that such similar molecules may arise owing to
convergent evolution should not be forgotten. Common molecular requirements
may have limited structural solutions. Molecular evolution and the endocrine
system The ...
5
Owls of the United States and Canada: A Complete Guide to ...
Biologists call this process convergent evolution. It occurs when two unrelated
groups of animals evolve to resemble each other in response to similar
challenges and pressures in their respective environments. In the world of birds,
there are ...
There is reason to believe that in the ostrich and its allies we have instances of
convergent evolution : they are probably polyphyletic in origin, and have drawn
towards one another. The dentition of the marsupial animals, according to their ...
Frederick Webb Headley,
1901
7
Structural Approaches to Sequence
Evolution: Molecules, ...
Convergent evolution claims that chance is largely responsible for the
appearance of new kinds of domains. Convergent evolution explains the
prevalence of certain types of structures by stating that those structures are more
favorable and are ...
Ugo Bastolla, Markus Porto, Eduardo Roman,
2007
8
Proteins: Structures and Molecular Properties
Alternatively, can similar conformations arise by convergent evolution as a result
of selection for a common function and common structural requirements for such
a function? These are just a few of the questions raised by the existence of ...
Thomas E. Creighton,
1993
Convergent evolution describes the acquisition of the same biological trait in unrelated lineages. The wing is a classic example of convergent evolution in action.
Frederic P. Miller, Agnes F. Vandome, John McBrewster,
2010
10
Invariants of Behavior: Constancy and Variability in Neural ...
Convergent evolution towards behavioral function underlies the appearance of
instincts and analogous behavior of different organisms. Convergence and
divergence also collaborate to resolve an old controversy about punctuated
equilibria.
नवीन गोष्टी ज्यामध्ये «CONVERGENT EVOLUTION» ही संज्ञा समाविष्ट आहे
खालील बातम्यातील आयटमच्या संदर्भात राष्ट्रीय आणि आंतरराष्ट्रीय पत्रकार कशाबद्दल बोलले आहेत आणि
convergent evolution ही संज्ञा कशी वापरली आहे ते शोधा.
“Map Of Life” Predicts ET. (So Where is He?)
It builds on the established principle of convergent evolution, a widely-supported theory – although one still disputed by some biologists – that ... «Lab Manager Magazine, जुलै 15»
The Swordfish: Deep ocean dweller
Their shape and size is similar to other billfish, but they are an example of convergent evolution where two different families of fish have arrived ... «Cayman Compass, जुलै 15»
Why do mangos taste like pines?
The first thing that pops to mind is convergent evolution. It is very common in nature for different animals which occupy very different habitats ... «ScienceBlog.com, जुलै 15»
Mitochondria, plastids evolved together into single-cell plankton 'eye'
... a process known as convergent evolution. Eye-like structures have evolved independently many times in different kinds of animals and algae ... «Space Daily, जुलै 15»
Single-celled plankton develops eye-like 'ocelloid' using pre-existing …
... this case warnowiids and animals—can evolve similar traits in response to their environments, a process known as convergent evolution. «Techie News, जुलै 15»
Think Spock when alien spotting
The Runes of Evolution builds on the principal of convergent evolution - that different species will independently evolve similar features. «Independent Online, जुलै 15»
In Resolving Darwin's Doubt, New Cambrian Animal Fossils Are No …
Once again: abrupt appearance of complex body plans, complex ecosystems, and convergent evolution. None of this helps the evolutionary ... «Discovery Institute, जुलै 15»
Forget little green men – aliens will look like humans, says …
... of Evolution, the University of Cambridge academic builds on the principle of convergent evolution – that different species will independently ... «The Independent, जुलै 15»
UBC study sheds light on bizarre plankton with 'eyes'
“It's an incredible example of convergent evolution,” said Brian Leander, a professor of marine zoology and a co-author on the study, published ... «The Globe and Mail, जुलै 15»
Origin and evolution of Petrocosmea (Gesneriaceae) inferred from …
... reversals, parallel evolution, and convergent evolution, which are probably associated with adaptation to pollination against the background of heterogeneous ... «BMC Blogs Network, जुलै 15»