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Topic: Frequency distribution of alleles

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allele frequencies

genetic alleles

frequency distribution of alleles

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	Allele frequency - Wikipedia, the free encyclopedia
		Allele frequency is a measure of the relative frequency of an allele on a genetic locus in a population.
		In population genetics, allele frequencies show the genetic diversity of a species population or equivalently the richness of its gene pool.
		The frequencies of all the alleles of a given gene often are graphed together as an allele frequency distribution histogram.
	en.wikipedia.org /wiki/Allele_frequency (785 words)

	Genetic drift
		In this generation, the frequency of the brown allele is 50%, as is the frequency for the blue allele.
		According to this perspective, the frequency distribution of alleles among a population of offspring (how many carriers there are of each allele) reflects a sampling of the alleles of the preceding generation.
		When the alleles of a gene do not differ with regard to fitness, on average the number of carrieres in one generation is proportional to the number of carriers in the last.
	www.ebroadcast.com.au /lookup/encyclopedia/ge/Genetic_drift.html (1277 words)

	Population Genetics of Plant Pathogens \| APSnet Education Center \| Genetic Drift (Site not responding. Last check: 2007-10-30)
		To "fix" an allele means that the allele is present at a frequency of 1.0, so all individuals in the population have the same allele at a locus.
		Alleles that occur at a low frequency are usually at a disadvantage in the process of genetic drift.
		Under a scenario of pure genetic drift, the probability of fixation of an allele in a population is its initial frequency in the population.
	www.apsnet.org /education/AdvancedPlantPath/Topics/PopGenetics/Pages/geneticdrift.htm (1683 words)

	J. McKenna, J. Cecil & P. Coukos, "Reference Guide on Forensic DNA Evidence" in Reference Manual on ... (Site not responding. Last check: 2007-10-30)
		The frequency with which an individual allele occurs in the comparison population is taken to be the probability of a coincidental match on that allele.
		If the probabilities of the individual alleles are not independent (i.e., if certain alleles are likely to occur together in a person), multiplying the individual allele frequencies may underestimate or overestimate the true probability of matching alleles in the chosen population and thereby misstate the incriminating value of the evidence.
		According to the principles of population genetics, the independence of alleles may be assumed only where the comparison population mixes freely and mates randomly (with respect to the alleles) such that the distribution of alleles within the comparison population is homogeneous.
	www.law.harvard.edu /publications/evidenceiii/articles/mcKenna.htm (3646 words)

	THE DYNAMICS OF THE EVOLUTION OF SEX: WHY THE SEXES ARE, IN FACT, ALWAYS TWO? (Site not responding. Last check: 2007-10-30)
		Always allele k=1 was expressed phenotypically, whereas allele k=2 was absent in haploids and in diploids was never expressed phenotypically but could be inherited and eventually expressed as allele k=1 in the offspring.
		The dynamics in the allelic frequency distribution of neutral genes was not very different from that of genes suffering selection pressure (clutch size, age for reproduction, for example).
		The final frequency distribution of alleles from all type of genes was less predictable as the number of genes subjected to selection grew larger, and was sensitive to initial conditions (i.e., initial composition of M(ij,k)).
	www.interciencia.org /v21_06/art04/index.html (6260 words)

	[No title] (Site not responding. Last check: 2007-10-30)
		A severe population bottleneck that occurs as a result of a small group of emigrants establishing a new population is refered to as a founder event.
		Random changes in allele frequencies become stronger when Ne is reduced, loss of rare alleles in population is accelerated.
		1996, 1998): alleles at low frequency are typically far more abundant than alleles at intermediate frequency at selectively neutral loci in large populations, however, in bottlenecked populations, rare alleles are quickly lost due to random genetic drift.
	www.colorado.edu /epob/epob3200ramey/Lecture11.html (429 words)

	[No title] (Site not responding. Last check: 2007-10-30)
		(3) binning of the alleles was done with the same precision in both sets, thus no alleles representing different entities in one set represent a single entity in the second set.
		alleles 123 in sample 1 will be coded as "1", and the same "1" code will be used for allele "120" in sample 2.
		Allele 124 in sample 1 and allele 121 in sample 2 will be coded as "2", etc., up to allele "5".
	www.geneticepi.com /Research/software/pool_str.txt (1048 words)

	[No title] (Site not responding. Last check: 2007-10-30)
		If two different alleles of a gene are present and only one is expressed, the expressed allele is said to be dominant, and the non-expressed allele is said to be recessive.
		A probability distribution describes the expected proportions of all possible outcomes of a set of events, such as the numbers of boys and girls in a family of a given size.
		It is important to distinguish between the frequency of an allele in a population and the genetic concept of dominance; a recessive allele may be the most common allele of a given gene in a given population.
	web.utk.edu /~mcollins/bio102/lecture.doc (3919 words)

	Mukhopadhyay, Mol Vis 2005; 11:792-797. Table 3. (Site not responding. Last check: 2007-10-30)
		Frequency distribution of variant alleles coding for Met98Lys in POAG and NTG patients in different population groups of the world.
		The table highlights the variability in the reported studies on the relative frequency of the allele coding for 98Lys among the population groups consisting mostly of Caucasians, east Asian, and south Asian.
		Such variability in the allelic distribution might be due to different gene pools in the population groups which determine the interaction of OPTN with other proteins contributing to the pathophysiology of the disease.
	www.molvis.org /molvis/v11/a94/mukhopadhyay-table3.html (93 words)

	Distribution of h-ras minisatellite alleles in colorectal...
		Distribution of h-ras minisatellite alleles in colorectal carcinoma patients and comparison with a control population
		The allele sizes were determined by mathematical procedure and the results compared with the control population.
		Moreover, 3.5% of genetic instability and 0.7% of allele loss at this locus were observed in colorectal cancer patients.
	www.cancerprev.org /Journal/Issues/20/5/204/884 (343 words)

	ANALYSIS OF THE ALIPOPROTEIN B GENE 3' HYPERVARIABLE REGION
		The allele frequency distribution was different from that of other populations in that it was trimodal, with peaks at 31, 37 and 47 repeats, with corresponding relative frequencies of 16.1%, 25.1% and 6.0%.
		Frequency distribution of the 18 HVE of the APOB 3' HVR that were observed in a random population of 367 unrelated Emiratis.
		The observed distribution of HVE allele frequency in the Emirati population is displayed in Table 1.
	www.kfshrc.edu.sa /annals/196/99-018A.html (2427 words)

	Basic Population Genetics [M.Tevfik Dorak] (Site not responding. Last check: 2007-10-30)
		An application of HWE is that when the frequency of an autosomal recessive disease (e.g., sickle cell disease, hereditary hemochromatosis, congenital adrenal hyperplasia) is known in a population and unless there is reason to believe HWE does not hold in that population, the gene frequency of the disease gene can be calculated.
		In this case, the expected frequency of a two-locus haplotype can be calculated as the probability of the occurrence of two independent (or joint) events simply by multiplying their gene frequencies.
		CONTML estimates phylogenies from gene frequency data by maximum likelihood under a model in which all divergence is due to genetic drift in the absence of new mutations (Cavalli-Sforza's method) and draws a tree.
	dorakmt.tripod.com /evolution/popgen.html (5072 words)

	Searching for Evidence of Positive Selection in the Human Genome Using Patterns of Microsatellite Variability -- ...
		skew in the frequency distribution are summarized in table 1.
		The observation that frequency spectra are not correlated with
		in the frequency distribution of polymorphisms (Gillespie 1994
	mbe.oxfordjournals.org /cgi/content/full/19/7/1143 (5167 words)

	Genetics Glossary AB (Site not responding. Last check: 2007-10-30)
		The surface plotted in a three-dimensional graph; with all possible combinations of allele frequencies for different loci plotted in the plane; and mean fitness for each combination plotted in the third dimension.
		A measure of how common an allele is in a population; the proportion of all alleles at one gene locus that are of one specific type in a population.
		A mutant allele coding for a tRNA whose anticodon is altered in such a way that the suppressor tRNA inserts an amino acid at an amber codon in translation suppressing (preventing) termination.
	helios.bto.ed.ac.uk /bto/glossary/ab.htm (2674 words)

	FREQUENCY DISTRIBUTION OF ANTIMALARIAL DRUG-RESISTANT ALLELES AMONG ISOLATES OF PLASMODIUM FALCIPARUM IN PURWOREJO ...
		FREQUENCY DISTRIBUTION OF ANTIMALARIAL DRUG-RESISTANT ALLELES AMONG ISOLATES OF PLASMODIUM FALCIPARUM IN PURWOREJO DISTRICT, CENTRAL JAVA PROVINCE, INDONESIA -- SYAFRUDDIN et al.
		FREQUENCY DISTRIBUTION OF ANTIMALARIAL DRUG-RESISTANT ALLELES AMONG ISOLATES OF Eijkman Institute for Molecular Biology, Jakarta, Indonesia;
		frequency distribution of mutant alleles of the genes associated
	www.ajtmh.org /cgi/content/abstract/69/6/614 (406 words)

	Genomic Microsatellites as Evolutionary Chronometers: A Test in Wild Cats -- Driscoll et al. 12 (3): 414 -- Genome ...
		Unique alleles, which were likely produced by mutation after the geographic isolation of the subspecies, are alleles represented in one subspecies but not the other.
		Figure 3 Frequency distribution of alleles at homologous microsatellite loci among lions (SER and GIR), pumas (PCO-SA and BCS), and cheetahs (Aju).
		Allele size of the largest and smallest alleles for each population are indicated by number above bar.
	www.genome.org /cgi/content/full/12/3/414 (5539 words)

	Abstracts: Ninth International Symposium on Human Identification
		Allele Frequency in the Population of Buenos Aires (Argentina) using Amplitype
		Allele Distribution for Six VNTR Markers in the Caucasian Population from Uruguay Compared with Regional Data
		Distribution of D1S80 Alleles in the Bengali Population of India
	www.promega.com /geneticidproc/ussymp9proc/abstracts.html (999 words)

	The Number of Self-Incompatibility Alleles in a Finite, Subdivided Population -- Schierup 149 (2): 1153 -- Genetics
		distribution for an undivided population and for a subdivided
		the mean frequency of alleles is substantially smaller.
		frequency distributions of an allele in a deme and in the total
	www.genetics.org /cgi/content/full/149/2/1153 (5253 words)

	Allelic Diversity Changes in 96 Canadian Oat Cultivars Released from 1886 to 2001 -- Fu et al. 43 (6): 1989 -- Crop ...
		Numbers of simple sequence repeat alleles and variation pattern over time for each primer pair in Canadian oat cultivars and comparisons of observed (O) and expected (E) alleles relative to those in cultivars released before 1930.
		The distributions of 62 SSR alleles (A) and 18 alleles undetected in the oat cultivars released since 1990 (B) with respect to their occurrence frequencies in all 96 oat cultivars.
		of alleles in cultivars released from the 1930s to the 1970s.
	crop.scijournals.org /cgi/content/full/43/6/1989 (3960 words)

	Association of an Apolipoprotein B Gene Marker With Essential Hypertension -- Frossard et al. 33 (4): 1052 -- ... (Site not responding. Last check: 2007-10-30)
		Allele frequencies were determined by the method of gene counting.
		Number and Frequency of the 18 Alleles (Corresponding to Repeat Numbers 21 to 55) Observed for the Apo B 3' HVR Locus in a Total of 874 Chromosomes Representing 215 Normotensive and 222 Hypertensive UAE Nationals
		Pooled Distribution of Alleles (With Associated Relative Frequencies) of the ApoB 3' HVR Using an a posteriori Model in the 2 Groups
	hyper.ahajournals.org /cgi/content/full/33/4/1052 (2812 words)

	Polymorphism at Codon 469 of the Intercellular Adhesion Molecule-1 Locus Is Associated with Protection Against Severe ...
		The frequency distribution of the alleles and genotypes for each ICAM-1 polymorphism did not show significant differences between HSP patients and controls.
		However, the frequency of the codon 469 K/E genotype was significantly decreased in patients without severe gastrointestinal manifestations compared to those with them (22.29 vs 65%, OR 0.1, p = 0.02, after correction for age, sex, and disease duration).
		None of the 11 adults exhibited the R/G genotype at codon 241 compared with 7 of 41 children (OR 0.0, 95% CI 0.0-2.9, p = 0.14).
	www.jrheum.com /abstracts/abstracts01/1014.html (346 words)

	Allele frequency distribution of the STR loci HUMTPOX, HUMTH01 and HUMVWA in Asturias (North Spain)
		Allele frequency distribution of the STR loci HUMTPOX, HUMTH01 and HUMVWA in Asturias (North Spain)
		No deviation from the Hardy-Weinberg equilibrium was detected in any of the three markers investigated and there was no evidence of association between the alleles of these loci.
		This paper presents a report of allele frequency data for the loci HUMTH01, HUMTPOX and HUMVWA in a population sample from Northern Spain.
	www.astm.org /JOURNALS/FORENSIC/PAGES/3143.htm (367 words)

	Allele frequency distribution for 10 STR loci in the Malay population of Malaysia
		Allele frequency distribution for 10 STR loci in the Malay population of Malaysia
		Assignment of alleles was made by visual comparison between the commercially supplied reference allelic ladders and the amplified samples at the corresponding locus.
		Author Panneerchelvam S, Haslindawaty N, Ravichandran M, Norazmi MN, Zainuddin ZF Title Allele frequency distribution for 10 STR loci in the Malay population of Malaysia Symposium, Committee on
	www.astm.org /JOURNALS/FORENSIC/PAGES/4316.htm (321 words)

	Association of chronic fatigue syndrome with human leucocyte antigen class II alleles -- Smith et al. 58 (8): 860 -- ...
		Association of chronic fatigue syndrome with human leucocyte antigen class II alleles -- Smith et al.
		alleles are in linkage disequilibrium with HLA-DQB106 and HLA-DRB115/16
		Association of symptomatic acute parvovirus B19 infection with human leukocyte antigen class I and II alleles.
	jcp.bmjjournals.com /cgi/content/full/58/8/860 (2413 words)

	IJID : Past Issues : Volume 2, Number 3
		The HLA-DQA1 allele frequencies, as well as homozygosity rates, were compared between the nonresponders and hyperresponders.
		Results: The overall allele frequency distribution of alleles between the nonresponders and hyperresponders was significantly different (P = 0.05), with nonresponders having an excess of HLA-DQA105 alleles* (P = 0.017) and hyperresponders having an excess of HLA-DQA101 alleles* (P = 0.016).
		Specifically, the carriage of the HLA-DQA105 alleles* is associated with nonresponse and that of HLA-DQA101 alleles* with hyperresponse.
	www.isid.org /publications/ijid/vol_2/num_3/2_3_143.shtml (362 words)

	Evolved Benevolence
		The focus of the contemporary model of evolution is not individuals struggling with each other, but impersonal strategies that play themselves out in a number of individuals, and as a result become more or less frequent in the population over time.
		Evolutionary replicator dynamics operates by changing the frequency distribution of alleles (that's the functional units of the genome) through differential reproduction.
		Clearly, we need a language of the heart, which is not modularly rational, as Lucy frequently proclaims.
	www.cogweb.ucla.edu /Culture/EvolvedBenevolence.html (2249 words)

	FREQUENCY DISTRIBUTION OF ANTIMALARIAL DRUG-RESISTANT ALLELES AMONG ISOLATES OF PLASMODIUM FALCIPARUM IN BANGUI, ...
		FREQUENCY DISTRIBUTION OF ANTIMALARIAL DRUG-RESISTANT ALLELES AMONG ISOLATES OF PLASMODIUM FALCIPARUM IN BANGUI, CENTRAL AFRICAN REPUBLIC -- MENARD et al.
		FREQUENCY DISTRIBUTION OF ANTIMALARIAL DRUG-RESISTANT ALLELES AMONG ISOLATES OF Pasteur Institute of Bangui, Bangui, Central African Republic
		We determined the baseline frequency distribution of mutant
	www.ajtmh.org /cgi/content/abstract/74/2/205 (229 words)

	Association of the {alpha}-Adducin Locus With Essential Hypertension -- Casari et al. 25 (3): 320 -- Hypertension
		study of the frequency distribution of the raw data.
		is similar to the distribution reported in a different white population.
		Cosegregation of the renin allele of the spontaneously hypertensive rat with an increase in blood pressure.
	hyper.ahajournals.org /cgi/content/full/25/3/320 (4936 words)

	SPORES
		First, we will characterize the frequency distribution of alleles at candidate susceptibility genotypes.
		This includes frequent interactions with the Co-PI, Co-Investigators from the Projects and Pilot Studies, and Core Leaders, internal program review and planning, external review, scientific seminar series, and overall representation of the needs of the scientific and administrative programs.
		Principal Investigator(s): Phyllis Gimotty, Ph.D. Co-Investigator(s): Aiyi Liu, Ph.D. The goal of the Biometrics Core is to provide SPORE investigators access to a team of biostatisticians who have experience with biostatistical methodology and their application to research studies in cancer of the skin.
	spores.nci.nih.gov /applicants/skin/skin_docs/sk-herlyn.html (2475 words)

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