define molecular mimicry
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- Freebase(0.00 / 0 votes)Rate this definition: Molecular mimicry. Molecular mimicry is defined as the theoretical possibility that sequence similarities between foreign and self-peptides are sufficient to result in the cross-activation of autoreactive T or B cells by pathogen-derived peptides.
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What is the difference between Batesian mimicry and Mullerian mimicry? apery, mimicry(noun) the act of mimicking; imitative behavior. mimicry(noun) the resemblance of an animal species to another species or to natural objects; provides concealment and protection from predators.
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What is the Molecular clock? Report Abuse. The molecular clock (based on the molecular clock hypothesis (MCH)) is a technique in genetics, which researchers use to date when two species diverged. It deduces elapsed time from the number of minor differences between their DNA sequences. It is sometimes called a gene clock.The notion of a molecular clock was first attributed to Emile Zuckerkandl and Linus Pauling who, in 1962, noticed that the quantity of amino acid differences in hemoglobin between lineages roughly matched the known evolutionary rate of divergence based upon fossil evidence.t is sometimes called a gene clock. The notion of a molecular clock was first attributed to Emile Zuckerkandl and Linus Pauling who, in 1962, noticed that the quantity of amino acid differences in hemoglobin between lineages roughly matched the known evolutionary rate of divergence based upon fossil evidence.
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Karyotyping for Chromosomal Abnormalities Karyotyping is the process of pairing and ordering all the chromosomes of an , thus providing a genome-wide snapshot of an individual's chromosomes. Karyotypes are prepared using standardized staining procedures that reveal characteristic structural features for each chromosome.
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Cloning Molecular cloning refers to the process of making multiple molecules. Cloning is commonly used to amplify DNA fragments containing whole genes, but it can also be used to amplify any DNA sequence such as promoters, non-coding sequences and randomly fragmented DNA.
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Molecular Mimicry as a Mechanism of Autoimmune Disease Relationship between molecular mimicry and autoimmune diseases. Immune cells of the adaptive immune response are specifically activated, but the hallmark of autoimmunity is the dysregulation of the immune system, especially T and B cells recognizing self-antigens as foreign.
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Molecular switch Molecular switch. A molecular switch is a molecule that can be reversibly shifted between two or more stable states. The molecules may be shifted between the states in response to environmental stimuli, such as changes in pH, light, temperature, an electric current, microenvironment, or in the presence of a ligand. In some cases, a combination of stimuli is required.
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- From Wikipedia, the free encyclopedia. The molecular clock (based on the molecular clock hypothesis (MCH)) is a technique in molecular evolution that uses fossil constraints and rates of molecular change to deduce the time in geologic history when two species or other taxa diverged.he molecular clock alone can only say that one time period is twice as long as another: it cannot assign concrete dates. To achieve this, the molecular clock must first be calibrated against independent evidence about dates, such as the fossil record.
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mimicry 2. mimicry-the resemblance of an animal species to another species or to natural objects; provides concealment and protection from predators. imitation-copying (or trying to copy) the actions of someone else.
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- A plausible explanation of the occurrence of Muellerian müllerian mimicry is known as the two step.. Hypothesis this concept states that, first a large mutational leap occurs naturally and spontaneously to establish an approximate resemblance of one species to another (species “the”). modelredators that avoid only one or the other type of harmful species provide no benefit to individuals of the species that is not avoided. Therefore, it would be advantageous if the appearances of the two prey species were more similar.
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- Molecular mimicry, also called epitopic and antigenic mimicry, is one of the leading theories that attempt to explain why the immune system turns on its own body in autoimmune diseases such as multiple sclerosis, rheumatoid arthritis and type 1 diabetes. In essence, the theory is very simple.
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Moe. 1 It refers to the phenomenon where two or more poisonous species share the same adaptations for warning predators…. 2  Insects and Batesian Mimicry: A Basic Overview Eat or be eaten is the rule of the wild. 3  Nature, red in tooth and claw, is a powerful trigger for evolutionary development.
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Autoimmune disease The concept of molecular mimicry describes a situation in which a foreign antigen can initiate an immune response in which a T or B cell component cross-recognizes self. The cross reactive immune response is responsible for the autoimmune disease state. Cross-reactive immune responses to self were first described for antibodies.
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Definitions &Translations Webster Dictionary (1.00 / 2 votes) Rate this definition: Mimicry (noun) the act or practice of one who mimics; ludicrous imitation for sport or ridicule. Mimicry (noun)
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Mimicry Batesian mimicry need not involve visual mimicry, but can employ deception of any of the senses. For example, some moths mimic the ultrasound warning signals sent by unpalatable moths to bat predators, a case of auditory Batesian mimicry. A cocktail of deceptive signals may also be used.atesian mimicry need not involve visual mimicry, but can employ deception of any of the senses. For example, some moths mimic the ultrasound warning signals sent by unpalatable moths to bat predators, a case of auditory Batesian mimicry. A cocktail of deceptive signals may also be used.
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GENETICS molecular genetics-the branch of genetics concerned with the structure and activity of genetic material at the molecular level. genetic science, genetics-the branch of biology that studies heredity and variation in organisms. 1  Facebook.
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- Molecular modeling is primarily a tool for calculating the energy of a given molecular structure. Thus, the first step in designing a molecular modeling investigation is to define the problem as one involving a structure-energy relationship. There are two conceptually different ways of thinking about energy.
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Molecular cloning Molecular cloning generally uses DNA sequences from two different organisms: the species that is the source of the DNA to be cloned, and the species that will serve as the living host for replication of the recombinant DNA. Molecular cloning methods are central to many contemporary areas of modern biology and medicine.
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- 10. In addition to insects, reptiles, fish and birds can be excellent examples of mimicry. Their feathers can take the colors of their surrounding so much that the animals who come across their menu barely stand a chance to survive if they get near them. This owl would be difficult to see in nature.0. In addition to insects, reptiles, fish and birds can be excellent examples of mimicry. Their feathers can take the colors of their surrounding so much that the animals who come across their menu barely stand a chance to survive if they get near them. This owl would be difficult to see in nature.
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Mimicry This resemblance confers an advantage—such as protection from predation—upon one or both organisms through some form of “information flow” that passes between the organisms and the animate agent of selection.
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- The deceived signal-receiver is typically another organism, such as the common predator of two species. As an interaction, mimicry is in most cases advantageous to the mimic and harmful to the receiver, but may increase, reduce or have no effect on the fitness of the model depending on the situation.
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mimic to imitate (a person, a manner, etc), esp for satirical effect; ape: known mainly for his ability to mimic other singers 2. to take on the appearance of; resemble closely: certain flies mimic wasps
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- Mimicry may be to the advantage of both organisms that share a resemblance, in which case it is a mutualism, or mimicry can be to the detriment of one, making it parasitic or competitive. Mimicry occurs when a group of organisms, the mimics, evolve to share perceived ...
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Molecular models of DNA Molecular models of DNA structures are representations of the molecular geometry and topology of Deoxyribonucleic acid (DNA) molecules using one of several means, with the aim of simplifying and presenting the essential, physical and chemical, properties of DNA molecular structures either in vivo or in vitro.
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mimic verb. A little girl mimics her big sister. A little girl mimics her big sister. The definition of mimic is make-believe. An example of something mimic is a pretend trial in a law class.To mimic is defined as to imitate or to copy. An example of to mimic is for a child to imitate everything her old sister does.erb. A little girl mimics her big sister. A little girl mimics her big sister. The definition of mimic is make-believe. An example of something mimic is a pretend trial in a law class.
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Mimicry mimicry: Müllerian mimicry. 1  in biology, phenomenon characterized by the superficial resemblance of two or more organisms that are not closely related taxonomically. This resemblance confers an advantage—such as protection from predation—upon one or both organisms through some form of “information...