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Direct-To-Consumer Genetic Testing - GEC-KO
Direct-To-Consumer Genetic Testing - GEC-KO

... Are there harms/limitations of direct-toconsumer genetic testing? • Caution when interpreting direct-to-consumer (DTC) genetic testing should be exercised as: – DTC genetic testing does not take into account numerous factors important when interpreting genetic test results such as age, family histo ...
Basic Forensic Genetics
Basic Forensic Genetics

... Some Definitions z genotype: genetic constitution of an  individual z phenotype: physical or biochemical  expression of a genotype (‘traits’) z polymorphism: a gene (or DNA locus) for  which the most common allele has a  frequency of < 0.95 (or 0.99) x c.f. rare allele (frequency < 0.005) x With 2  ...
Genetics and Coronary Artery Disease: Present and Future
Genetics and Coronary Artery Disease: Present and Future

... of small targeted DNA sequences billions of times in a test tube. The arrival of PCR facilitated the analysis of polymorphisms and mutations, reduced the time and cost of genetic studies, and still remains a fundamental laboratory technique.13 In 2000, technological progress provided scientists with ...
STUDY PROTOCOL
STUDY PROTOCOL

... Alghero and Ozieri. Few consultant neurologists practising for the National Health System (NHS) territorial services in the study area ……provide care to epileptic patients. • Since year 2000, Sassari Health District has benefited from the Health Information System Unit (HISU) where health informatio ...
Ancestral genotypes now susceptible to diease
Ancestral genotypes now susceptible to diease

... worldwide populations (1–18%) [18]. A re-sequencing survey showed that the haplotype class carrying the derived allele at SNP44 has a significant deficit of polymorphism relative to expectations under neutrality [19]; this suggests that this derived allele is younger than expected for a neutral alle ...
Polygenic inheritance and genes in populations
Polygenic inheritance and genes in populations

... • The reasons for this are a complex mix of genetic, environmental and social risk factors. • Epidemiology is the description and analysis of the pattern of diseases in the population, the causes of these different patterns, and the use of this information to improve public health. • We know that so ...
Reaching new heights: insights into the genetics of human stature
Reaching new heights: insights into the genetics of human stature

... The genome-wide association study (GWAS) approach and its success at finding loci for a range of complex traits has been described in detail recently [16]. Five recent studies using genome-wide association data have identified a total of 44 independent (HapMap [http://www.hapmap.org/] r2 < 0.1) vari ...
Intro to Genetics
Intro to Genetics

... • polygenic ...
ws addl HW prob+key ans
ws addl HW prob+key ans

... 8. 1 in 1700 US Caucasian newborns have cystic fibrosis. C is the normal allele, dominant over the recessive c. Individuals must be homozygous for the recessive allele to have the disease. What percent of the above population have cystic fibrosis (cc or q2)? 0.000588235 Assuming a Hardy-Weinberg Equ ...
Intro to Genetics
Intro to Genetics

... • polygenic ...
Hardy Weinberg Problem Set
Hardy Weinberg Problem Set

... 5. After graduation, you and 19 of your closest friends (lets say 10 males and 10 females) charter a plane to go on a round -the-world tour. Unfortunately, you all crash land (safely) on a deserted island. No one finds you and you start a new population totally isolated from the rest of the world. T ...
Population Genetics / Hardy
Population Genetics / Hardy

... 1) If the frequency of a recessive allele is 30% in a population of 200 people, how many people would you predict would show the dominant phenotype? How many people would be carriers (heterozygotes) of this allele? How many people would show the recessive phenotype? ...
Genomics Bioinformatics Medicine. Institute of Medicine, October 15, 2002, Washington DC
Genomics Bioinformatics Medicine. Institute of Medicine, October 15, 2002, Washington DC

... Single Nucleotide Polymorphisms (SNPs) GCTGTATGACTAGAAGATCGAT GCTGTATGACGAGAAGATCGAT • Individual’s genomes differ from each other by 0.1% • There are 3 million polymorphic sites in the human genome • SNPs an be used for identification • SNPs can be used for diagnosis of disease ...
Emmanuelle Génin, Josué Feingold, Françoise - HAL
Emmanuelle Génin, Josué Feingold, Françoise - HAL

... gene leading to different phenotypic expression of the disease. One major example of genetic heterogeneity is hypertrophic cardiomyopathy, an autosomal dominant disease that can be due to more than 300 different mutations, most of them (~65%) located in two genes encoding the sarcomeric proteins MyB ...
D - Institute for Behavioral Genetics
D - Institute for Behavioral Genetics

... Notes: Key to genetic components (c.f. Figure 2): MM=maternal copies of genes having indirect maternal effects (m) when present in the mother; CM = maternal copies of genes having direct effects (h) when present in offspring; MC= offspring copies of genes having indirect maternal effects (m) when pr ...
Results Abstract Material and Methods Acknowledgement
Results Abstract Material and Methods Acknowledgement

Hardy Weinberg Equilibrium - Center for Statistical Genetics
Hardy Weinberg Equilibrium - Center for Statistical Genetics

... Systematic errors in genotyping, Unexpected population structure, Presence of homologous regions in the genome, Association with trait in case-control studies. ...
Mendelian inheritance
Mendelian inheritance

... sequences)  of  the  same  gene  or  genetic  locus.  Often  called   A,B  or  A,a.   • Polymorphic:  Polymorphic  loci  have  several  different  alleles.  At   non-­‐polymorphic  loci,  there  is  no  variation  from  person  to   person. ...
Cis
Cis

... [email protected] ...
(CCDG CVD) Working Group Plan - Centers for Common Disease
(CCDG CVD) Working Group Plan - Centers for Common Disease

... coding regions comes from the very large number of low-frequency and rare variants. As for coding regions, we expect that non-coding variants of strong effect may be under strong purifying selection and may thus have very low frequency. To have reasonable power to detect association of such variant ...
Toll-Like Receptor 4 Gene Polymorphisms and Bladder Cancer
Toll-Like Receptor 4 Gene Polymorphisms and Bladder Cancer

... Subjects and Methods: A total of 48 BCa patients and 36 healthy controls were enrolled in this study. DNA was extracted from the blood samples taken from these participants. Tlr4 gene was amplified with polymerase chain reaction (PCR) using specific primers. Genotyping of the SNPs of interest was do ...
Modes of inheritance of genetic diseases
Modes of inheritance of genetic diseases

... 1) Predominantly affects males – males only need 1 copy of mutant allele to show trait. (trait is rare in females – they need to be m/m to show the trait – occurs if affected male marries carrier female) 2) Affected males (m/y) do not transmit trait to sons (do not transmit mutant allele) 3) The tra ...
Monohybrid Cross Worksheet
Monohybrid Cross Worksheet

... a. What is the man’s genotype and the woman’s genotype? b. What is the man’s phenotype and the woman’s phenotype? c. What genotype(s) must the offspring have in order to have the phenotypic trait of hitchhiker’s thumb? d. Do a cross to determine all potential hitchhiker’s thumb genotypes and phenoty ...
RGC Collaborator Factsheet
RGC Collaborator Factsheet

... American Indians have extremely high rates of type 2 diabetes mellitus, diabetic nephropathy, and obesity, yet large-scale sequencing efforts to identify disease loci have not included individuals from this ethnic group. Therefore, coding variants that are unique or enriched in American Indians, whic ...
Special Article - Arteriosclerosis, Thrombosis, and Vascular Biology
Special Article - Arteriosclerosis, Thrombosis, and Vascular Biology

... represents a population with the possible histories of environmental exposures that each member of that population might have experienced. Each population is expected to have a different distribution of relative genotype frequencies and a different constellation of possible environmental histories. ...
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Genome-wide association study



In genetic epidemiology, a genome-wide association study (GWA study, or GWAS), also known as whole genome association study (WGA study, or WGAS) or common-variant association study (CVAS), is an examination of many common genetic variants in different individuals to see if any variant is associated with a trait. GWASs typically focus on associations between single-nucleotide polymorphisms (SNPs) and traits like major diseases.These studies normally compare the DNA of two groups of participants: people with the disease (cases) and similar people without (controls). This approach is known as phenotype-first, in which the participants are classified first by their clinical manifestation(s), as opposed to genotype-first. Each person gives a sample of DNA, from which millions of genetic variants are read using SNP arrays. If one type of the variant (one allele) is more frequent in people with the disease, the SNP is said to be ""associated"" with the disease. The associated SNPs are then considered to mark a region of the human genome which influences the risk of disease. In contrast to methods which specifically test one or a few genetic regions, the GWA studies investigate the entire genome. The approach is therefore said to be non-candidate-driven in contrast to gene-specific candidate-driven studies. GWA studies identify SNPs and other variants in DNA which are associated with a disease, but cannot on their own specify which genes are causal.The first successful GWAS was published in 2005 and investigated patients with age-related macular degeneration. It found two SNPs which had significantly altered allele frequency when comparing with healthy controls. As of 2011, hundreds or thousands of individuals are tested, over 1,200 human GWA studies have examined over 200 diseases and traits, and almost 4,000 SNP associations have been found. Several GWA studies have received criticism for omitting important quality control steps, rendering the findings invalid, but modern publications address these issues. However, the methodology itself still has opponents.
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