hom ology

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İlgili Terimler

homology
(Tıp) homolojf
homology
benzeşiklik
homology
homoloji
homology
benzeşim
homology
eşitlik
homology
türdeşlik
homology
(Tıp) Benzeyiş
homology
(Sosyoloji, Toplumbilim) benzeşiklik (goldmann)
homology
türdeslik
homology
(Diş Hekimliği) homolog olma niteliği; homolog
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İlgili Terimler

homology
A theory associating a system of quotient groups to each topological space
homology
The relationship between the elements in the same group of the periodic table, or between organic compounds in a homologous series
homology
A correspondence of structures in two life forms with a common evolutionary origin, such as flippers and hands
Homology
heterology
homology
similarity in the sequence of a protein or nucleic acid or in structure of an organ that reflects a common evolutionary origin
homology
Being related by the evolutionary process of divergence from a common ancestor Homology implies similarity, but low similarity does not necessarily prove homology See also: Twilight zone, Midnight zone
homology
Homologs have common origins but may or may not have common activity Genes that share an arbitrary threshold level of similarity determined by alignment of matching bases are termed homologous They are inherited from a common ancestor which possessed the structure This may be difficult to determine when the structure has been modified through descent Note: homology is a qualitative term (something is either homologous or not), while similarity is the corresponding quantitative term Therefore, it is more appropriate to refer to xx % similarity (i e never xx % homology)
homology
similarity of features based on common descent
homology
Similarity in DNA or protein sequences between individuals of the same species or among different species
homology
1 The relationship of any two characters that have descended from a common ancestor This term can apply to a morphological structure, a chromosome or an individual gene or DNA segment 2 In MGI, assertions of Mammalian Homology imply presumed orthology See the Figure at NCBI See also: Homolog, Orthology, Paralogy
homology
The presence of the same series of bases in related genes
homology
all members of the paraffin series
homology
The correspondence or resemblance of substances belonging to the same type or series; a similarity of composition varying by a small, regular difference, and usually attended by a regular variation in physical properties; as, there is an homology between methane, CH4, ethane, C2H6, propane, C3H8, etc
homology
similarity reflecting a common evolutionary origin
homology
Clad Any characteristic shared between two that whose similarity is due to common descent Opposed to homoplasy In cladistics, both homology and homoplasy are determined a posteriori with reference to a particular phylogeny that maximizes homology and minimizes homoplasy
homology
The quality of being homologous; correspondence; relation; as, the homologyof similar polygons
homology
Similarity of the structure, physiology, or development of different species of organisms based on their descent from a common evolutionary ancestor. Analogy, by contrast, is a functional similarity of structure that is based not on common evolutionary origins but on mere similarity of use. The forelimbs of such widely differing mammals as humans, bats, and deer are homologous; the form of construction and the number of bones in each are practically identical and represent adaptive modifications of the forelimb structure of their shared ancestor. The wings of birds and insects, on the other hand, are merely analogous; they are used for flight in both types of organisms but do not share a common ancestral origin
homology
the quality of being similar or corresponding in position or value or structure or function
homology
Two structures are considered homologous when they are inherited from a common ancestor which possessed the structure This may be difficult to determine when the structure has been modified through descent
homology
A system of quotient groups associated to a topological space
homology
Similarity in DNA or protein sequences of the same species or among different species
homology
Correspondence or relation in type of structure in contradistinction to similarity of function; as, the relation in structure between the leg and arm of a man; or that between the arm of a man, the fore leg of a horse, the wing of a bird, and the fin of a fish, all these organs being modifications of one type of structure
homology
A homologous relationship
homology
A similarity of structures due to their 'affinity' through an ideal type, or archetype, according to Richard Owen In modern evolutionary theory, the similarity is homologous if it evolved from the same structure in a common ancestor Otherwise, any similarity is convergent and therefore 'analogous' See also transcendentalism
homology
a similar character state present in two or more species of organisms, and derived from a single character in their common ancestor (homologous, adj )
homology
Similarity due to common evolutionary origin, i e derived from the same ancestral character; thus, equivalent to synapomorphy Morphologists also define homology by common developmental origin, which is quite a different concept, being based on a different process, although empirically the two homologies may be congruent Non-cladists like to include symplesiomorphy in their concept of homology
homology
In an extended sense, the term is applied to the relation between chemical elements of the same group; as, chlorine, bromine, and iodine are said to be in homology with each other
homology
Similarity attributed to descent from a common ancestor
homology
{i} analogy, likeness, equality, suitableness