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Changes to DNA with no overall impact
genetics, mutations in which natural selection does not affect the spread of the mutation in a species are termed neutral mutations. Neutral mutations that
Neutral_mutation
Theory of evolution by changes at the molecular level
that are selectively neutral. A neutral mutation is one that does not affect an organism's ability to survive and reproduce. Neutral alleles may have no
Neutral theory of molecular evolution
Neutral_theory_of_molecular_evolution
Alteration in the nucleotide sequence of a genome
of butterflies with this mutation may form a larger percentage of the population. Neutral mutations are defined as mutations whose effects do not influence
Mutation
Variant of one theory of evolution
fact that not all mutations are either so deleterious such that they can be ignored, or else neutral. Slightly deleterious mutations are reliably purged
Nearly neutral theory of molecular evolution
Nearly_neutral_theory_of_molecular_evolution
Subfield of genetics
the neutral theory of molecular evolution. In this view, many mutations are deleterious and so never observed, and most of the remainder are neutral, i
Population_genetics
Concept in genetics
necessarily changes in phenotypes) are caused by genetic drift acting on neutral mutations. The process of genetic drift can be illustrated using 20 marbles
Genetic_drift
Change in a gene pool
N and neutral mutation rate μ {\displaystyle \mu } , the initial frequency of a novel mutation is simply 1/(2N), and the number of new mutations per generation
Fixation (population genetics)
Fixation_(population_genetics)
DNA mutation with no observable effect on an organism's phenotype
Silent mutations, also called synonymous or samesense mutations, are mutations in DNA that do not have an observable effect on the organism's phenotype
Silent_mutation
Evolution of different specialized function in two copies of a duplicated gene
take on separate functions. Subfunctionalization is a neutral mutation process of constructive neutral evolution; meaning that no new adaptations are formed
Subfunctionalization
Rate at which mutations occur during some unit of time
type of mutation; there are many different types of mutations. Mutation rates are given for specific classes of mutations. A point mutation is a change
Mutation_rate
Population genetic test statistic
contains mutations with no effect on the fitness and survival of an organism. The randomly evolving mutations are called "neutral", while mutations under
Tajima's_D
that factor. In this theory, every evolutionary event, mutation, and gene polymorphism (neutral differences in phenotype or genotype) would have to be
The Neutral Theory of Molecular Evolution
The_Neutral_Theory_of_Molecular_Evolution
Measure of genetic diversity
is a measure of the "population mutation rate" (the product of the effective population size and the neutral mutation rate) from the observed nucleotide
Watterson_estimator
Aspect of evolutionary biology
neutral mutation hypothesis. According to this hypothesis, if substitutions are due to the random fixation of selectively neutral or nearly neutral mutations
Rate_of_evolution
History of the field of study
expected in a population, based on population size, mutation rate, and whether the mutant alleles were neutral, overdominant, or deleterious. Thus, the infinite
History of molecular evolution
History_of_molecular_evolution
Persistence of a biological trait under uncertain conditions
have shown a tolerance to mutations of roughly 66% (i.e. two thirds of mutations are neutral). Conversely, measured mutational robustnesses of organisms
Robustness_(evolution)
control Neo-Darwinism Neomorph Neoplasm Neurofibromatosis Neurospora Neutral mutation Neutral petite NF Nickase Nicking NIH Nitrogen base Nitrogenous base Non-coding
Index_of_genetics_articles
Technique to deduce the time in prehistory when two or more life forms diverged
neutral mutations (i.e. mutations with no effect on fitness) in a new individual be μ {\displaystyle \mu } . The probability that this new mutation will
Molecular_clock
Ratio estimating the balance between nonsynonymous and synonymous substitutions
ratio, is used to estimate the balance between neutral mutations, purifying selection and beneficial mutations acting on a set of homologous protein-coding
Ka/Ks_ratio
Stochastic process used in biology to describe finite populations
step. Neutral drift is the idea that a neutral mutation can spread throughout a population, so that eventually the original allele is lost. A neutral mutation
Moran_process
Form of evolutionary mutation
a synonymous one. When a synonymous or silent mutation occurs, the change is often assumed to be neutral, meaning that it does not affect the fitness of
Synonymous_substitution
Type of mutation in a DNA sequence
organism. When a nonsense mutation is neutral, it does not provide benefits or harm. These occur when the effects of the mutation are unnoticed. In other
Nonsense_mutation
Phenomenon in biology
when newly appeared (and hence still rare) mutations are advantageous and increase in frequency. Neutral or even slightly deleterious alleles that happen
Genetic_hitchhiking
Type of evolutionary extinction vortex
equated to the mean fixation time of a neutral mutation. This is only due to the small population that mutation is affecting, where the time for fixation
Mutational_meltdown
Replacement, insertion, or deletion of a single DNA or RNA nucleotide
A point mutation is a genetic mutation where a single nucleotide base is changed, inserted or deleted from a DNA or RNA sequence of an organism's genome
Point_mutation
mutation, which is determined by the environment creating the selective pressure, is low in comparison to other mutations. Hence, almost near neutral
Weak_selection
Similar DNA, RNA or protein sequences within genomes or among species
identify sequences which mutate differently to an expected background (neutral) mutation rate. The GERP (Genomic Evolutionary Rate Profiling) framework scores
Conserved_sequence
Protein found in humans
result of it being a beneficial adaption or through an evolutionary neutral mutation mechanism that went through genetic drift events, or through sexual
ABCC11
Genetic mutation not inherited from a parent
A de novo mutation is a newly present mutation in an individual organism. These may occur in gametogenesis due to a germline mutation in a parent, or
De_novo_mutation
Genetic point mutation that results in an amino acid change in a protein
In genetics, a missense mutation is a point mutation in which a single nucleotide change results in a codon that codes for a different amino acid. It is
Missense_mutation
Set of genes all related by point mutations that have equivalent function or fitness
A neutral network is a set of genes all related by point mutations that have equivalent function or fitness. Each node represents a gene sequence and each
Neutral_network_(evolution)
Allele equilibrium in a population when creation equals elimination by negative selection
created by mutation equals the rate at which deleterious alleles are eliminated by selection. The majority of genetic mutations are neutral or deleterious;
Mutation–selection_balance
1969 scientific biology paper
comparative immunology, to argue that most protein evolution is due to neutral mutations and genetic drift. It was published in the journal Science on May
Non-Darwinian Evolution (paper)
Non-Darwinian_Evolution_(paper)
Change in the heritable characteristics of populations
requiring neutral evolution or high mutation rates. Several studies report that the mutations implicated in adaptation reflect common mutation biases though
Evolution
List of alternatives to Darwinian natural selection
alleles that are neutral. A neutral mutation is one that does not affect an organism's ability to survive and reproduce. The neutral theory allows for
Alternatives to Darwinian evolution
Alternatives_to_Darwinian_evolution
Study of changes in DNA and RNA over time
theoretical and empirical results have established that mutational tendencies can influence both neutral and adaptive evolution via bias in the introduction
Molecular_evolution
Genetic process
haplotypes previously present (and neutral) within the population. As soft sweeps arise from standing variation, the mutation may be present on several genomic
Selective_sweep
Scientific study about E. coli
to 20 beneficial mutations achieved fixation in each population, with fewer than 100 total point mutations (including neutral mutations) reaching fixation
E. coli long-term evolution experiment
E._coli_long-term_evolution_experiment
Nucleotide mutation that alters the amino acid sequence
strong evidence against a strictly neutral theory of molecular evolution, which states that mutations are mostly neutral or deleterious, and provides support
Nonsynonymous_substitution
Phenomenon inducing a loss of genetic diversity
the neutral sites are linked to deleterious sites. For unlinked sites, it is reduced by exp(-8Ush), where U is the genome-wide deleterious mutation rate
Background_selection
Chromosomal crossover resulting in gene duplication or deletion
Now that there is a redundant copy, neutral mutations can act on the duplicate. Most commonly the neutral mutations will continue until the duplicate becomes
Unequal_crossing_over
Framework for computational learning
} itself is required to be available as a mutation, so there will always be at least one neutral mutation. The intention of this definition is that at
Evolvability (computer science)
Evolvability_(computer_science)
Medical condition
BRCA mutation is a mutation in either of the BRCA1 and BRCA2 genes, which are tumor suppressor genes. Hundreds of different types of mutations in these
BRCA_mutation
Species of fish
selection through antagonistic pleiotropy, rather than genetic drift and neutral mutation, the traditionally favored hypothesis for regressive evolution. A primary
Mexican_tetra
Paradox relating to genetic diversity
hitchhiking, as favourable mutations spread they 'drag along' nearby sections of DNA, fixing them and reducing diversity. Neutral theorists like Kimura pointed
The_paradox_of_variation
Japanese biologist
Having worked on the neutral theory of evolution with Kimura, Ohta became convinced that division into good, neutral and harmful mutations was too simplistic
Tomoko_Ohta
American evolutionary biologist and mathematician (1929–2021)
of the high levels of variability by either balancing selection or neutral mutation. Martin Kreitman was later to do a pioneering survey of population-level
Richard_Lewontin
Mix of funds used to start and sustain a business
relative supply of equity vs. debt capital available to the firm. The neutral mutation hypothesis — firms fall into various financing habits that do not impact
Capital_structure
oxidative phosphorylation. A neutral petite produces all wild type progeny when crossed with wild type. petite mutations can be induced using a variety
Petite_mutation
Viruses can become part of the DNA of those they infect
Jukes–Cantor nucleotide divergence between the 5′ and 3′ LTRs, μ is the neutral mutation rate per site per year for the host species, and the factor accounts
Endogenization
Type of genetic selection favoring one extreme phenotype
previously neutral mutation that was present in a population becomes beneficial, often because of an environmental change. Such a mutation may be present
Directional_selection
Mutation that shifts codon alignment
A frameshift mutation (also called a framing error or a reading frame shift) is a genetic mutation caused by indels (insertions or deletions) of a number
Frameshift_mutation
paleontology. network evolution See reticulate evolution. neutral mutation 1. Any mutation of a nucleic acid sequence that is neither beneficial nor
Glossary of genetics and evolutionary biology
Glossary_of_genetics_and_evolutionary_biology
Alternative to evolution by natural selection
Mutationism is one of several alternatives to evolution by natural selection that have existed both before and after the publication of Charles Darwin's
Mutationism
Congenital autosomal recessive disorder
been associated genetically with mutations in the CGI-58 gene (for NLSD-I) or the ATGL/PNPLA2 gene (for NLSD-M). Neutral lipid storage disease is caused
Neutral_lipid_storage_disease
Adaptation of animals to constant darkness
evolution of troglomorphic characters suggests selection rather than neutral mutation as a driver of eye reduction in cave crabs". Biology Letters. 9 (2)
Troglomorphism
effect on fitness; however, they can also be neutral and even advantageous. It is theorized that these mutations, along with genetic recombination, are the
Behavior_mutation
Subgenus of fishes
mostly white (leucism). These color morphs appear to be products of neutral mutations and have no effects on fitness. A pink manta ray has been observed
Manta_ray
resolve the long-standing neutralism-selectionism controversy, which revolves around the question whether frequent neutral mutations – a consequence of robustness
Andreas_Wagner
1992 video game
Mutation Nation is a 1992 beat 'em up video game developed and published by SNK for the Neo Geo arcade and home platforms. It was later released on the
Mutation_Nation
Species having two or more distinct forms
between molecular evolution, which he saw as dominated by selectively neutral mutations, and phenotypic characters, probably dominated by natural selection
Polymorphism_(biology)
Loss of the copy of a gene from one parent in a diploid organism
remaining copy of the tumor suppressor gene can be inactivated by a point mutation or via other mechanisms, resulting in a loss of heterozygosity event, and
Loss_of_heterozygosity
Science of genes, heredity and variation
that if a mutation changes a protein produced by a gene, about 70 percent of these mutations are harmful with the remainder being either neutral or weakly
Genetics
Measure in population genetics
the accumulation of mutation load, culminating in extinction via mutational meltdown. The accumulation of deleterious mutations in humans has been of
Genetic_load
Theory of evolutionary biology
calls this simplified model for speciation a point mutation, using the terminology of the Neutral theory of molecular evolution. The urn scheme for the
Unified neutral theory of biodiversity
Unified_neutral_theory_of_biodiversity
Book by Richard Dawkins
looks at molecular taxonomy and Motoo Kimura's neutral theory of molecular evolution. Neutral mutations serve as molecular clocks that show us when species
The_Blind_Watchmaker
this article. Mutations can have many different effects upon an organism. It is generally believed that the majority of non-neutral mutations are deleterious
Evolution of sexual reproduction
Evolution_of_sexual_reproduction
Indian population geneticist (1946–2018)
Evolution 29:1-10. Nei M, Fuerst PA, Chakraborty R. 1976. Testing the neutral mutation hypothesis by distribution of single locus heterozygosity Nature 262:491-493
Ranajit_Chakraborty
When multiple copies of a beneficial mutation become established and fix together
two major forms of soft sweeps: A beneficial mutation previously separated in the population neutrally and therefore existed as multiple haplotypes at
Soft_selective_sweep
Evolutionary theory
A:B interaction "presuppresses" the deleterious nature of the mutation, making it a neutral change in the genome that is capable of spreading through the
Constructive neutral evolution
Constructive_neutral_evolution
Theory of evolutionary change
and regain its ability to bind two hormones, several independent neutral mutations would have to occur purely by chance with no selection pressure. As
Dollo's law of irreversibility
Dollo's_law_of_irreversibility
Taiwanese-American scientist
1038/351649a0. PMID 2052090. S2CID 4344039. Graur, D. A. N.; Li, W.H. (1991). "Neutral mutation hypothesis test". Nature. 354 (6349): 114–6. Bibcode:1991Natur.354
Wen-Hsiung_Li
Statistical test in population genetics
PMID 10880498. Tajima F (November 1989). "Statistical method for testing the neutral mutation hypothesis by DNA polymorphism". Genetics. 123 (3): 585–95. doi:10
Fay_and_Wu's_H
Evolutionary biology hypothetical posed by J. B. S. Haldane
the genome, with one side positing natural selection, and the other, neutral mutation. Neither of the parties seriously doubted that the theory was both
Precambrian_rabbit
Sections of the genome experiencing minimal changes across species
than expected under conservative models for neutral mutation rates. This fold change difference in mutation rates was consistent between humans, chimpanzees
Ultraconserved_element
Population genetics concept
N in neutral theory, but for alleles under selection, sojourn times are proportional to log(N). Genetic hitchhiking can cause neutral mutations to have
Effective_population_size
Total number of genetic characteristics in a species
lack of understanding whether low neutral genetic diversity is correlated with high genetic drift and high mutation load. In a review of current research
Genetic_diversity
divergence and low polymorphism. This can be explained by a neutral difference in the rate of mutations in each loci. A test that suggests selection: Again suppose
HKA_test
American plant geneticist
human mutation is estimated to be 100 new mutations per generation. According to Sanford, Kimura's curve shows that most mutations have a near-neutral effect
John_C._Sanford
Hypothesis on normative mate selection
functionality of their bearers (they are thus termed "silent" or "neutral mutations"). The restraint koinophilia exerts on phenotypic change suggests
Koinophilia
critical for the ability of a system to evolve. The prevalence of neutral mutations in nature implies that biological systems have more genotypes than
Developmental_bias
Japanese biologist (1924–1994)
"Some calculations on the mutation load". Jpn. J. Genet. 36: 179–190. Ohta, Tomoko (November 1992). "The Nearly Neutral Theory of Molecular Evolution"
Motoo_Kimura
Field of synthetic biology
suggesting ways to make a synthetic genome work. Many supposedly neutral mutations introduced by the computer turned out to change previously unknown
Synthetic_genomics
Protein-coding gene in the species Homo sapiens
mediates epithelial resorption of neutral amino acids across the apical membrane in the kidney and intestine. Mutations in the SLC6A19 gene cause Hartnup
SLC6A19
estimation of dog genome, it can estimate the global parameters, such as neutral mutation rate and repeat content. GSS is also an effective way to large-scale
Genome_survey_sequence
Chemical compound
have arisen through neutral mutations like previously described for Thg1 and indeed the rates are mostly consistent with random mutation. However, a few occurrences
Pyrrolysine
Theory in the domain of evolutionary biology
survival of the fitter. Whereas mutational explanations for evolutionary patterns are typically assumed to imply or require neutral evolution, the theory of
Bias in the introduction of variation
Bias_in_the_introduction_of_variation
Evolutionary process
appearance and functionality of their bearers (i.e., they are "silent" or "neutral mutations", which can be, and are, used to trace the relatedness and age of
Speciation
Protein-coding gene in the species Homo sapiens
Myerowitz R (1997). "Tay-Sachs disease-causing mutations and neutral polymorphisms in the Hex A gene". Human Mutation. 9 (3): 195–208. doi:10
HEXA
Methods in computational biology
frequencies using Markov model to reduce the influence of random neutral mutations to highlight the role of selective evolution. The normalized frequencies
Alignment-free sequence analysis
Alignment-free_sequence_analysis
fixed in the population through mutation accumulation if no disadvantage is incurred by loss of that pathway. Mutations causing loss of a complex trait
Evolution of biological complexity
Evolution_of_biological_complexity
Mathematical theory
finite population where neutral alleles are produced in step-wise fashion. The original model assumes that if an allele has a mutation that causes it to change
Stepwise_mutation_model
Protein-coding gene in the species Homo sapiens
Neutral and basic amino acid transport protein rBAT is a protein that in humans is encoded by the SLC3A1 gene. Mutations in the SLC3A1 gene are associated
SLC3A1
US-American solid state physicist
relevant power law, namely that for a novel feature requiring multiple neutral mutations, the time to fixation has a sublinear dependence on population size
David_Snoke
Evolution of bitter taste receptors
trait created by the non-synonymous mutation is being selected for relative to the neutral synonymous mutations. For the bitter taste gene family, TAS2R
Bitter_taste_evolution
Use of related sequences to construct an ancestral-like gene
examples of parallel evolution, support the neutral network model mentioned above. Other earlier neutral mutations acted as a ratchet and made the changes
Ancestral sequence reconstruction
Ancestral_sequence_reconstruction
Species of bird
Australian wetlands, scrublands, and bushlands. There are many different mutations of this bird. Look up cockatiel in Wiktionary, the free dictionary. Originally
Cockatiel
as dN/dS) to estimate the balance between neutral mutations, purifying mutations, and beneficial mutations. In birds, Z-chromosome genes have the highest
Genomic_evolution_of_birds
Species of bat
than would be expected. It is believed that the missing tooth is a neutral mutation that neither helps nor hurts the survival of individuals. The founder
São_Tomé_collared_fruit_bat
deleterious mitochondrial genome (mtDNA) mutations from their mother, while those mutations are beneficial, neutral or less deleterious to females. As mtDNA
Mother's_curse
travel, tourism, insurance
NEUTRAL MUTATION
NEUTRAL MUTATION
Boy/Male
Hindu, Indian
Natural
Girl/Female
Indian
Natural
Boy/Male
Assamese, Hindu, Indian, Marathi, Punjabi, Sikh
Eyes; Leader; Guide
Girl/Female
Gujarati, Hindu, Indian, Marathi
Eye
Boy/Male
Tamil
Natural
Boy/Male
Hindu
Natural
Surname or Lastname
English (mainly central England)
English (mainly central England) : patronymic from a pet form of the personal name Thomas.
Girl/Female
Bengali, Gujarati, Hindu, Indian, Kannada, Malayalam, Marathi, Sanskrit, Tamil, Telugu
Eyes
Girl/Female
Hindu
Natural
Girl/Female
Australian, Hindu, Indian
Pure
Girl/Female
Tamil
Central
Boy/Male
Gujarati, Hindu, Indian
Eyes
Girl/Female
Hindu, Indian, Kannada, Marathi, Sindhi, Tamil, Telugu
Central
Girl/Female
Tamil
Natural
Girl/Female
Indian, Kashmiri, Telugu
Natural
Girl/Female
Indian, Japanese, Moldovan, Russian
Natural
Boy/Male
Indian, Punjabi, Sikh
Natural
Girl/Female
Hindu, Indian, Marathi, Tamil, Traditional
Central
Girl/Female
Hindu
There is no ending. ne-no tal-ending, The forehead
Girl/Female
Indian, Sikh
Natural
NEUTRAL MUTATION
NEUTRAL MUTATION
NEUTRAL MUTATION
NEUTRAL MUTATION
NEUTRAL MUTATION
NEUTRAL MUTATION
NEUTRAL MUTATION
a.
relating to the nerves or nervous system; taining to, situated in the region of, or on the side with, the neural, or cerebro-spinal, axis; -- opposed to hemal. As applied to vertebrates, neural is the same as dorsal; as applied to invertebrates it is usually the same as ventral. Cf. Hemal.
a.
Neither good nor bad; of medium quality; middling; not decided or pronounced.
a.
Begotten without the sanction of law; born out of wedlock; illegitimate; bastard; as, a natural child.
a.
Having to do with existing system to things; dealing with, or derived from, the creation, or the world of matter and mind, as known by man; within the scope of human reason or experience; not supernatural; as, a natural law; natural science; history, theology.
n.
A person or a nation that takes no part in a contest between others; one who is neutral.
a.
Conformed to the order, laws, or actual facts, of nature; consonant to the methods of nature; according to the stated course of things, or in accordance with the laws which govern events, feelings, etc.; not exceptional or violent; legitimate; normal; regular; as, the natural consequence of crime; a natural death.
a.
Produced by natural organs, as those of the human throat, in distinction from instrumental music.
adv.
Toward the neural side; -- opposed to haemad.
a.
Not engaged on either side; not taking part with or assisting either of two or more contending parties; neuter; indifferent.
a.
Having neither acid nor basic properties; unable to turn red litmus blue or blue litmus red; -- said of certain salts or other compounds. Contrasted with acid, and alkaline.
a.
Neuter. See Neuter, a., 3.
a.
Of, pertaining to, or situated near, the belly, or ventral side, of an animal or of one of its parts; hemal; abdominal; as, the ventral fin of a fish; the ventral root of a spinal nerve; -- opposed to dorsal.
a.
Indifferent or neutral.
a.
Springing from true sentiment; not artifical or exaggerated; -- said of action, delivery, etc.; as, a natural gesture, tone, etc.
a.
Resembling the object imitated; true to nature; according to the life; -- said of anything copied or imitated; as, a portrait is natural.
a.
Belonging to, to be taken in, or referred to, some system, in which the base is 1; -- said or certain functions or numbers; as, natural numbers, those commencing at 1; natural sines, cosines, etc., those taken in arcs whose radii are 1.
a.
Between the neural arch and the centrum of a vertebra; as, the neurocentral suture.
a.
Fixed or determined by nature; pertaining to the constitution of a thing; belonging to native character; according to nature; essential; characteristic; not artifical, foreign, assumed, put on, or acquired; as, the natural growth of animals or plants; the natural motion of a gravitating body; natural strength or disposition; the natural heat of the body; natural color.
n.
Natural gifts, impulses, etc.
adv.
In a neutral manner; without taking part with either side; indifferently.
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