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Hvad Betyder DIMORPHIC på Dansk

Eksempler på dimorphic i en sætning. Candida Albicans is a dimorphic fungus that is sometimes referred as monilia. - Candida Albicans er en dimorphic fungus, der kaldes undertiden monilia. engelsk. dansk. Oversæt. Dansk.

Polymorphism | Crystal Structures, Molecular Shapes

Ask the Chatbot a Question Ask the Chatbot a Question polymorphism, in crystallography, the condition in which a solid chemical compound exists in more than one crystalline form; the forms differ somewhat in physical and, sometimes, chemical properties, although their solutions and vapours are identical. The existence of different crystalline or molecular …

Sexually-trimorphic interactions with colour polymorphism determine

Floral rewards are known to vary between sexually dimorphic species and to a lesser extent between colour morphs. However, the interactive effect of sexual trimorphism and colour polymorphism is ...

ALTERNATIVE MATING STRATEGIES AND THE EVOLUTION …

In both males and females, the mating strategy polymorphism has gone from trimorphic to dimorphic in four locations and from trimorphic to monomorphic in four locations . All eight changes to the polymorphism involve the loss of the yellow allele that codes for sneaker males and K-strategy morphs ( Corl 2007 ).

Diaspore dispersal ability and degree of dormancy in …

All 20 species are heterodiasporous (dimorphic, 14; trimorphic, 4; polymorphic, 2) annuals, and none is amphicarphic sensu stricto. Thirteen of the species are heterocarpic, six heterospermic, one amphi-basicarpic and none heteroarthrocarpic. Diaspores of 19 of the species differ in seed dormancy/germination.

Definition of dimorphism

Adj: dimorphic. Compare with: trimorphism, polymorphism. Click here to see list of references, authorities, sources and geographical terms as used in this glossary. Prev: dimetric system Next: Ding's magnetic separator Glossary Search . Mineral and/or Locality . Mindat is an outreach project of the Hudson Institute of Mineralogy, a 501(c)(3

Dormancy and germination of the trimorphic achenes of a …

Many studies have been done on the relationship between variation in morphology, dispersal ability and degree of dormancy of heterocarpic species with dimorphic diaspores. However, there are far fewer such studies on species that produce trimorphic diaspores. Our aim was to compare dormancy and germ …

Formation, Properties, and Practical Applications of

As the name suggests, the layer lattice minerals or phyllosilicates are essentially made up of layers formed by condensation of sheets of Si(O, OH)4 tetrahedra with those of …

Trimorphic stepping stones pave the way to fungal virulence

The C. albicans dimorphic yeast–hyphae transition is thought to underlie its success as a pathogen. Mutants locked as yeasts (lacking Cph1 and Efg1 transcription factors or cyclin Hgc1) or filaments (lacking the Tup1 repressor) are both avirulent, linking both forms to pathogenesis (8 –10).Subsequently, a strain was engineered in which …

The Structure of Silicate Clays

On the basis of the number of tetrahedral to octahedral sheets in one layer, the following types are recognized: 1:1 or dimorphic, 2:1 or trimorphic, and 2:2 or 2:1:1 or tetramorphic types. Each clay mineral group can be …

Dormancy and germination characteristics of the trimorphic …

Dormancy and germination of dimorphic achenes have been compared within and between numerous species of Asteraceae, whereas only a few such comparisons have been made with trimorphic achenes. Garhadiolus papposus is an annual ephemeral species of disturbed desert habitats that produces three kinds of …

Thermally Dimorphic Human Fungal …

Dimorphism is defined as the ability of a fungus to generate free-living vegetative cell types that are either yeast or hyphal (Fig. 1), although we discuss some exceptions to this precise definition below.The most parsimonious explanation for the origin of fungi begins with a unicellular eukaryotic cell from which multicellular filamentous forms evolved.

A new genus and species of deep-sea Coralliidae

Polyps dimorphic or trimorphic, with reproductive siphonozooids and feeding autozooids, retractile into coenenchyme or cortex surrounding axis. Mesozooids when present retractile with feebly developed tentacles, scattered among siphonozooids or along the margin of capitulum. Polyps lacking sclerites or with spindles, ovals, clubs, or …

Definition of polymorphism

Polymorphism limited to two or three crystal classes is dimorphism or trimorphism, respectively. Individual species are polymorphs (dimorphs, trimorphs). Polytypism refers to variable stacking of identical layer structures in different crystal classes. Adj: polymorphic (dimorphic, trimorphic). Adv: polymorphous (dimorphous, trimorphous).

dimorphic trimorphic

dimorphic and trimorphic in minerals; vendor laboratory mills minerals in my; quarrying of stone sand ore and minerals; machine used under ground mine to ... Heteromorphy and Flower Development in Primula. Heteromorphy and Flower Development in Primula ... tems can be dimorphic or trimorphic, Primula exemplifies the dimorphic condition.

What Is Polymorphism In Geology | Science-Atlas

" Materials with two polymorphs are called dimorphic, with three polymorphs, trimorphic, etc. SU LMS. Week 11-12. Isomorphism, Polymorphism and Pseudomorphism. Pseudomorphism is the presence of a mineral which has the look of another mineral. Pseudomorph means false form.

Polymorphism

FT-IR and Raman Spectroscopies, Polymorphism Applications. D.D. Le Pevelen, G.E. Tranter, in Encyclopedia of Spectroscopy and Spectrometry (Third Edition), 2017 Introduction. Polymorphism is a common phenomenon of crystalline materials. It describes the ability of a substance to exist as two or more crystalline phases that have different …

8 Metamorphic Minerals and Metamorphic Rocks – …

Alignment of clays, micas, graphite, or other platy minerals, the separation of a rock into light and dark layers, or parallel fracturing leads to planar fabrics called foliation.The photo on the right above (Figure 8.25) shows foliation (vertical fracture traces) that cuts across a bedding plane separating older and youger rock layers of different compositions.

Definition of polymorphism

Polymorphism limited to two or three crystal classes is dimorphism or trimorphism, respectively. Individual species are polymorphs (dimorphs, trimorphs). Polytypism refers …

The evolution of polymorphic sexual systems in daffodils

Narcissus, the daffodil genus, exhibits an unusual diversity of sexual systems, with populations that are monomorphic, dimorphic or trimorphic for style length.Associated with this variation are striking differences among species in floral morphology and pollination biology. This diversity provides an opportunity to investigate …

Greater mycorrhizal colonization of unisexual morphs than of

Different sexual morphs of dimorphic and trimorphic populations of plants have different demands for resources correlating with phenotypic and ecological dissimilarities among morphs. Few studies have investigated the variations in mycorrhizal symbiosis across the sexual morphs of trimorphic plant populations. Here, we report …

-specific morphs: the genetics and evolution of intra …

The complex dynamics needed to generate and maintain multiple heritable morphs might be expected to result primarily in dimorphic or trimorphic systems. Indeed, the number of tetramorphic examples ...

LECTURE 2 (2 hours) PHYSICAL PROPERTIES OF …

Minerals are grouped according to their physical properties, which may be direction dependent. Isotropic: physical properties are same in all directions. Gases, liquids, amorphous and cubic minerals crystallizing in isometric system are isotropic. ... Dimorphic, Trimorphic . or . Polymorphic . according to the number of mineral species …

(PDF) The trimorphic life cycle in foraminifera: Observations …

In about 40 of the 4000 or so extant foraminifera a cycle between gamont and agamont, the dimorphic cycle, or parts of it, have been shown to exist. In 14 of them, mostly symbiont-bearing larger foraminifera, megalospheric schizonts have been observed and a trimorphic cycle has been inferred.

The genomics and evolution of inter-sexual mimicry and …

-limited morphs can provide profound insights into the evolution and genomic architecture of complex phenotypes. Inter-sexual mimicry is one particular type of -limited polymorphism in which ...

Physical Properties of Minerals

The Fundamentals of this Lecture are : Physical Properties of Minerals, Isotropism, Anisotropic, Isotropic, Polymorphism, Polymorphic, Characters Depending Upon Cohesion and Elasticity, Characters Depending Upon Specific Gravity, Characters Depending Upon Light, Diapheneity

Metagenesis and Polymorphism | Phylum Cnidaria

Dimorphic form: Typical representative is Aurelia. Trimorphic form: Typical representative is Obelia. Polymorphic form: The classical example is the Siphonophora. Examination of these grades has given rise to two plausible answers. One view holds that ancestral cnidarians were polyps and the medusae developed secondarily from it.

Selective loss of polymorphic mating types is associated with …

Males in dimorphic populations may have increased in size relative to males in trimorphic populations because of the benefits of large size in male–male competition for territories . With the loss of nonterritorial yellow males, all males in dimorphic populations would be engaged in territorial defense, increasing the intensity of selection ...

Formation, Properties, and Practical Applications of

a 1: 1 proportion gives rise to the two-sheet or dimorphic type minerals exemplified by kaolinite (Fig. lC). Similarly, the three-sheet or trimorphic clays are formed by a 2: 1 condensation, the octahedral Al (OH) 6 sheet being sandwiched between two tetrahedral sheets, e.g., pyrophyllite. There is scope, in these structures, for

6 Polymorphism and structure–property relations

This chapter expands on this strategy of studying structure-property relations by investigating polymorphic systems. Systems studied may be categorized either in terms …

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