What is homotypic and heterotypic adhesion?

What is homotypic and heterotypic adhesion? Definition. Adhesion mediated by undefined adhesion molecules between identical cell types (homotypic) or two different cell types (heterotypic). What is Heterotypic binding? Heterotypic binding is binding to cells of different type. Homophilic vs heterophilic binding. Homophilic: CAMs bound to the same kind of CAMs on another cell. Heterophilic: CAMs […]

What is Homotropic allosteric enzyme?

What is Homotropic allosteric enzyme? TYPES OF ALLOSTERIC REGULATION Homotropic: A homotropic allosteric modulator is a substrate. for its target enzyme, as well as a regulatory molecule of the enzyme’s activity. It is typically an activator of the enzyme. For example, O2 is a homotropic allosteric modulator of hemoglobin. What are Homotropic effects? Homotropic effects […]

Is spike protein A homotrimer?

Is spike protein A homotrimer? The SARS-CoV-2 spike protein is a homotrimer composed of three monomers (chains A, B, and C; Figure 1a). Each monomeric protein contains an N-terminal ACE2 binding domain (receptor binding domain; RBD), a central helix/heptad repeat, and a C-terminal region that interacts with the plasma membrane [18]. Is collagen heterotrimer? Normal […]

What is homotopy perturbation method?

What is homotopy perturbation method? Homotopy perturbation method (HPM) is a semi-analytical technique for solving linear as well as nonlinear ordinary/partial differential equations. The method may also be used to solve a system of coupled linear and nonlinear differential equations. Who introduced homotopy? Introduction In recent years, the homotopy perturbation method (HPM), first proposed by […]

What is a homotopy class?

What is a homotopy class? Definition A a homotopy class is an equivalence class under homotopy: For f:XY a continuous function between topological spaces which admit the structure of CW-complexes, its homotopy class is the morphism in the classical homotopy category that is represented by f. What is the difference between homotopy and Homeomorphism? A […]

What is optimal homotopy analysis method?

What is optimal homotopy analysis method? Optimal homotopy analysis method is a powerful tool for nonlinear differential equations. In this method, the convergence of the series solutions is controlled by one or more parameters which can be determined by minimizing a certain function. What is homotopy perturbation method? Homotopy perturbation method (HPM) is a semi-analytical […]

What is the closest relative to Smilodon?

What is the closest relative to Smilodon? According to the BBC, Saber-tooth cats went extinct roughly 10,000 years ago and it is suggested that their closest living relative might not be the tiger or the lion, but the clouded leopard. Why did the Homotherium go extinct? The decline of Homotherium could be a result of […]

How was the Homotherium preserved?

How was the Homotherium preserved? They were also known to roam colder environments at high latitudes, and had flat paws adapted to provide them excellent traction in the snow. Recently, the researchers discovered a Homotherium fossil preserved by Pleistocene permafrost outside Dawson City, Yukon Territory, Canada, and were able to obtain a DNA sample. What […]

Why did the Homotherium go extinct?

Why did the Homotherium go extinct? The decline of Homotherium could be a result of the disappearance of large herbivorous mammals like mammoths in America at the end of the Pleistocene. In North America fossil remains of Homotherium are less abundant than those of its contemporary Smilodon. How was the Homotherium preserved? They were also […]

What is homothallism and heterothallism in fungi?

What is homothallism and heterothallism in fungi? Fungi have evolved two paradigmatic sexual systems: heterothallism and homothallism (Figure 1). Heterothallic fungi require two compatible partners for mating to occur, whereas homothallic fungi are self fertile with a single individual capable of sexual reproduction even in solo culture. What is homothallic and heterothallic condition? The main […]

What is a dimer and tetramer?

What is a dimer and tetramer? The dimer interface is formed by subunits A and B or C and D, whereas the tetramer interaction consists of contacts between subunits A and D or B and C (Figure 1). What is a tetrameric structure? Tetramer: A structure composed of four identical smaller units, or four very […]

What does Homotetramer mean?

What does Homotetramer mean? A homotetramer is a protein complex made up of four identical subunits which are associated but not covalently bound. Conversely, a heterotetramer is a 4-subunit complex where one or more subunits differ. Examples of homotetramers include: enzymes like beta-glucuronidase (pictured) What is a dimer and tetramer? The dimer interface is formed […]

Where are Homoscleromorpha found?

Where are Homoscleromorpha found? Habitat. Homoscleromorpha are exclusively marine sponges that tend to encrust on other surfaces at shallow depths. These sponges typically inhabit shady locations, under overhangs and inside caves. In the Mediterranean Sea, 82% of the species in this taxon can be found in caves, and 41% of them are found nowhere else. […]

What are the examples of Heteropolysaccharides?

What are the examples of Heteropolysaccharides? Heteropolysaccharides Representative heteropolysaccharides chondroitin-4-sulfate* D-glucuronic acid and N-acetyl-D-galactosamine-4-O-sulfate cartilage heparin* D-glucuronic acid, L-iduronic acid, N-sulfo-D-glucosamine mast cells, blood gamma globulin* N-acetyl-hexosamine, D-mannose, D-galactose blood Which are the homopolysaccharides? Homopolysaccharides include arabinans (made from arabinose units), fructans, galactans, galacturonans, glucans, mannans, and xylans. What is Homopolysaccharide example? Hint: Homopolysaccharides are […]

What is homopolysaccharide example?

What is homopolysaccharide example? Hint: Homopolysaccharides are those polysaccharides that are composed of only one type of sugar monomer or monosaccharides. These monomers react with other monomers to form polymers. Starch, glucose, and glycogen are examples of typical homopolysaccharides. Starch is mostly produced by green plants to store energy. What is the homopolysaccharide? Homopolysaccharides. Homopolysaccharides […]

What is homopolymer with example?

What is homopolymer with example? A homopolymer plastic is one that is produced by the polymerization of a single monomer. For example, polystyrene is composed of nothing but styrene monomer residues, making it a homopolymer. Other examples of homopolymer thermoplastics that are used in injection molding include: Polypropylene. Polycarbonate. What is meant by Homopolymerization? A […]

What is Homopolymeric DNA?

What is Homopolymeric DNA? DNA homopolymer tracts are the simplest of simple sequence repeats (SSRs); the two types being poly(dA). poly(dT) and poly(dG). … Only long (N>10 bp) homopolymer tracts were observed at high frequencies in this AT-rich genome. The non-coding regions were found to be highly over-represented in the large poly(dA). What is homopolymer […]

What is homopolymer give example?

What is homopolymer give example? A homopolymer plastic is one that is produced by the polymerization of a single monomer. For example, polystyrene is composed of nothing but styrene monomer residues, making it a homopolymer. Other examples of homopolymer thermoplastics that are used in injection molding include: Polypropylene. What is a homopolymer used for? The […]

Which is the example of homopolymer?

Which is the example of homopolymer? Examples of homopolymer are as polythene ( monomer is ethene), polypropylene( monomer is propene), polyvinyl chloride(PVC)( monomer is vinyl chloride), polyacrylonitrile (PAN) (monomer is vinyl cyanide)etc. What are the types of homopolymer? A homopolymer will have the characteristics of its monomer type ethylene to polyethylene, propylene to polypropylene, for […]

How do you identify homoplasy?

How do you identify homoplasy? If they fall out as symplesiomorphies or synapomorphies in a phylogenetic analysis, their status as homologies remains unfalsified. If they fall out as homoplasies, having evolved independently in more than one clade, their status as homologous is falsified, and a homoplasy is identified. How do you differentiate homoplasy from homology […]

Is homoplasy convergent evolution?

Is homoplasy convergent evolution? Homoplasies provide the signature of convergent evolution, and reveal the powerful role of selection in creating adaptive solutions to common social and ecological problems. How does convergent evolution lead to homoplasy? Parallel and convergent evolution lead to homoplasy when different species independently evolve or gain a comparable trait, which diverges from […]

What is the difference between homoplasy and homology?

What is the difference between homoplasy and homology? Homology is similarity that reflects common descent and ancestry. Homoplasy is similarity (some might say superficial similarity) arrived at via independent evolution. Are all homologous traits Homoplasies? All homoplasies are homologous features. All homoplasies are evolutionary reversals. All derived characters are homoloplasies. All homologous features are evolutionary […]

What are Homoplastic traits?

What are Homoplastic traits? 1 : of or relating to homoplasy homoplastic traits. 2 : of, relating to, or derived from another individual of the same species homoplastic grafts. Is Homoplastic the same as analogous? Homoplastic (analogous) characters may also be similar in appearance, but have actually evolved from different ancestors. … Octopus eyes and […]

What is a homologous structure and what are some examples?

What is a homologous structure and what are some examples? Homologous structures are similar physical features in organisms that share a common ancestor, but the features serve completely different functions. An example of homologous structures are the limbs of humans, cats, whales, and bats. What is a Homoplastic characteristic? Character which is shared by taxa […]

What is a Homoplastic trait?

What is a Homoplastic trait? 1 : of or relating to homoplasy homoplastic traits. 2 : of, relating to, or derived from another individual of the same species homoplastic grafts. What is a Homoplastic structure? Features of animals that have similar structure are classified as homologous if they have a common evolutionary origin, even if […]

What do you mean by evolutionary convergence?

What do you mean by evolutionary convergence? Convergent evolution is when different organisms independently evolve similar traits. … Biologists call this process when two organisms share characteristics that they didn’t jointly inherit from a common ancestor convergent evolution. What is an example Homoplasies? A homoplasy is a character shared by a set of species but […]

What does homoplasy mean in biology?

What does homoplasy mean in biology? A homoplasy is a character shared by a set of species but not present in their common ancestor. A good example is the evolution of the eye which has originated independently in many different species. When this happens it is sometimes called a convergence. What is Homoplastic? 1 : […]

What does mitochondrial DNA do?

What does mitochondrial DNA do? Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). How common is Leigh syndrome? Leigh syndrome affects at least 1 in 40,000 newborns. The condition […]

What DNA is Heteroplasmic?

What DNA is Heteroplasmic? Heteroplasmy is the presence of more than one type of organellar genome (mitochondrial DNA or plastid DNA) within a cell or individual. It is an important factor in considering the severity of mitochondrial diseases. What causes Heteroplasmy? Heteroplasmy describes the situation in which two or more mtDNA variants exist within the […]

What is a Homoplasious trait?

What is a Homoplasious trait? A homoplasious trait is a similarity among organisms that was not inherited from the common ancestor of those organisms. Homoplasies can evolve in three ways (though the lines between these categories are often blurry): Convergent evolution. How is homoplasy different from homology? The main difference between homology and homoplasy is […]