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The genotype-first approach is a type of strategy used in genetic epidemiological studies to associate specific genotypes to apparent clinical phenotypes
Genotype-first_approach
Part of the genetic makeup of a cell which determines one of its characteristics
The genotype of an organism is its complete set of genetic material. Genotype can also be used to refer to the alleles or variants an individual carries
Genotype
Sequencing of all the exons of a genome
this will reduce the power to detect variants as well. Using a genotype-first approach to identify candidate genes might also offer a solution to overcome
Exome_sequencing
Health problem from genome abnormalities
use several methodological approaches to determine genotype–phenotype associations. One method, the genotype-first approach, starts by identifying genetic
Genetic_disorder
Tabular summary of genetic combinations
to predict the genotypes of a particular cross or breeding experiment. It is named after Reginald C. Punnett, who devised the approach in 1905. The diagram
Punnett_square
Principle in genetics
Hardy–Weinberg equilibrium, model, theorem, or law, states that allele and genotype frequencies in a population will remain constant from generation to generation
Hardy–Weinberg_principle
Measurement of genetic variations
SNP genotyping is the measurement of genetic variations of single nucleotide polymorphisms (SNPs) between members of a species. It is a form of genotyping
SNP_genotyping
Clinical Significance
Jozef; Gilissen, Christian; Grillo, Lucia (January 2018). "A genotype-first approach identifies an intellectual disability-overweight syndrome caused
Pleckstrin_homology_domain
Locations where civilization emerged
"A single domestication for maize shown by multilocus microsatellite genotyping". Proceedings of the National Academy of Sciences. 99 (9): 6080–4. Bibcode:2002PNAS
Cradle_of_civilization
Indigenous people in Canada who are not Inuit or Métis
(lifestyle, diet, poverty) and genetic and biological factors (e.g. thrifty genotype hypothesis, thrifty phenotype) – though to what extent each factor plays
First_Nations_in_Canada
sequencing, genotyping by sequencing, also called GBS, is a method to discover single nucleotide polymorphisms (SNP) in order to perform genotyping studies
Genotyping_by_sequencing
of statistical estimation of haplotypes from genotype data. The most common situation arises when genotypes are collected at a set of polymorphic sites
Haplotype_estimation
One gene variant masking the effect of another in the other copy of the gene
(Aa X Aa) would produce AA, Aa, and aa offspring in a 1:2:1 genotype ratio with the first two classes showing the (A) phenotype, and the last showing
Dominance_(genetics)
Carneiro, Fátima; Pinto, Nádia; Lemos, Carolina (January 2023). "Genotype-first approach to identify associations between CDH1 germline variants and cancer
Hereditary lobular breast cancer
Hereditary_lobular_breast_cancer
Response to the same environmental variation differently by different genotypes
Gene–environment interaction (or genotype–environment interaction or G×E) is when two different genotypes respond to environmental variation in different
Gene–environment_interaction
Aspect of population genetics
the pure-bred homozygote parental strain with genotype AABB with a different pure-bred strain with genotype aabb. A and a and B and b represent the alleles
Genetic_linkage
Variant of DNA sequence at a locus
heterozygous genotypes), "Type B" (produced by IBIB homozygous and IBi heterozygous genotypes), "Type AB" produced by IAIB heterozygous genotype, and "Type
Allele
Evolutionary biology hypothesis
concept of a "thrifty genotype" remains as viable as when first advanced...". He went on to advance that the thrifty genotype concept be thought of in
Thrifty_gene_hypothesis
Type of genetic marker
analyzing RAD tags are referred to as RAD markers. Although genotyping by sequencing presents an approach similar to the RAD-seq method, they differ in some substantial
Restriction site associated DNA markers
Restriction_site_associated_DNA_markers
(see SNP genotyping). Due to the increasing abundance of NGS data, these techniques are becoming increasingly popular for performing SNP genotyping, with
SNV_calling_from_NGS_data
Organism composed of cells of different genotypes
ky-MEER-ə, kih-) is a single organism composed of cells of different genotypes. Animal chimeras can be produced by the fusion of two (or more) embryos
Chimera_(genetics)
Group of genes from one parent
A haplotype (haploid genotype) is a group of alleles in an organism that are inherited together from a single parent. Many organisms contain genetic material
Haplotype
Statistical inference of unobserved genotypes
In genetics, imputation is the statistical inference of unobserved genotypes. It is achieved by using known haplotypes in a population, for instance from
Imputation_(genetics)
Genetic disorder caused by a mutation of chromosome 15
maternal copy is still absent, this genotype is still problematic for CNS development. Importantly, the genotypes are predictive of the severity of symptoms
Angelman_syndrome
Study of genetic variants in different individuals
approach is known as phenotype-first, in which the participants are classified first by their clinical manifestation(s), as opposed to genotype-first
Genome-wide_association_study
Philosophical theory
(July 2012). "A Whole-Cell Computational Model Predicts Phenotype from Genotype". Cell. 150 (2): 389–401. doi:10.1016/j.cell.2012.05.044. PMC 3413483.
Holism
Individuals nearly identical in genotype due to long inbreeding
individuals of a particular species which are nearly identical to each other in genotype due to long inbreeding. A strain is generally defined to be inbred once
Inbred_strain
Genetic condition involving facial, heart, blood and skeletal features
contributing to an additional 5% of cases. Correlations between phenotype and genotype exist, and identifying the genetic cause can shed light on expected symptoms
Noonan_syndrome
Collection of microscopic DNA spots attached to a solid surface
measure the expression levels of large numbers of genes simultaneously or to genotype multiple regions of a genome. Each DNA spot contains picomoles (10−12 moles)
DNA_microarray
Trait change of an organism in response to environmental variation
wide variety of environments, understanding and ability to predict crop genotype by environment interaction will be essential for future food stability
Phenotypic_plasticity
Viral agent that causes mumps
twelve genotypes that vary in their geographic distribution are recognized. Humans are the only natural host of the mumps virus. MuV replicates first by binding
Mumps_virus
Capacity of a system for adaptive evolution
behavior. Analogously, the evolvability of organisms depends on their genotype–phenotype map. This means that genomes are structured in ways that make
Evolvability
Study of the inheritance of continuously variable traits
major approaches to defining and partitioning genotypic variance. One is based on the gene-model effects, while the other is based on the genotype substitution
Quantitative_genetics
Computational and mathematical modeling of complex biological systems
focuses on complex interactions within biological systems, using a holistic approach (holism instead of the more traditional reductionism) to biological research
Systems_biology
Classification of blood types
expressed on circulating von Willebrand factor is modified by ABO blood group genotype and is a major determinant of plasma von Willebrand factor antigen levels"
ABO_blood_group_system
Human viral infection
genotype. In the United States, about 70% of cases are caused by genotype 1, 20% by genotype 2, and about 1% by each of the other genotypes. Genotype
Hepatitis_C
Herpes virus that causes chickenpox and shingles
of five major and two minor genotypes of varicella-zoster virus strains: a practical two-amplicon approach used to genotype clinical isolates in Australia
Varicella_zoster_virus
Nonsteroidal anti-inflammatory drug (NSAID) used to treat pain
necessary for clearing naproxen. Studies on the relationship between CYP2C9 genotype and NSAID-induced gastrointestinal bleeds have shown that genetic variants
Naproxen
Inflammation of the liver
ribavirin, based on the patient's genotype, delineated as genotypes 1–6. Genotype 1 (GT1), which is the most prevalent genotype in the United States and around
Hepatitis
Variant of polymerase chain reaction
Kompetitive allele specific PCR (KASP) is a homogenous, fluorescence-based genotyping variant of polymerase chain reaction. It is based on allele-specific oligo
Kompetitive allele specific PCR
Kompetitive_allele_specific_PCR
Ability to digest milk after infancy
advantage exists for lactase persistence, and the lactase persistence genotype and phenotype remains rare. For example, in East Asia, historical sources
Lactase_persistence
American singer-songwriter (born 1989)
Penguin Publishing. ISBN 978-1-61564-622-7. Gasser, Nolan (2019). "The Pop Genotype". Why You Like It: The Science and Culture of Musical Taste. Flatiron Books
Taylor_Swift
Genome regions affecting protein levels
of existing treatments. pQTL analysis can complement GWAS approaches to help confirm genotype-phenotype findings. For example, while GWAS findings have
Protein quantitative trait loci
Protein_quantitative_trait_loci
one Z and one W sexual chromosome (genotype ZW), while male (the homogametic sex) carries two Z chromosomes (genotype ZZ). Thus, reciprocal crosses between
Dwarfism_in_chickens
Queen of the United Kingdom from 1837 to 1901
Faskhutdinova, Gulnaz; Kittler, Ellen L. W.; Moliaka, Yuri K. (2009), "Genotype Analysis Identifies the Cause of the "Royal Disease"", Science, 326 (5954):
Queen_Victoria
Concept in classical genetics
individual organism with a dominant genotype or phenotype with another organism exhibiting a recessive genotype or phenotype. To better grasp the concept
Test_cross
Pathogenic type of misfolded protein
molecules of the same amino acid sequence, as occurs in a particular host genotype. Under most circumstances, only PrP molecules with an identical amino acid
Prion
For calculation of mRMP, the analyst must first deduce a major and minor contributor and their genotypes based on the peak heights given in the electropherogram
Forensic_statistics
Mathematical rule for inverting probabilities
rule can be used to estimate the probability that someone has a specific genotype. Many people seek to assess their chances of being affected by a genetic
Bayes'_theorem
Viral disease
2016, 11 imported cases of the Angola genotype in unvaccinated Chinese nationals were reported in China, the first appearance of the disease in Asia in
Yellow_fever
Purported phenomena beyond the scope of normal scientific understanding
COMT dopaminergic gene: A preliminary attempt to associate phenotype with genotype using an underlying brain theory". Cortex. 44 (10): 1336–1341. doi:10.1016/j
Paranormal
Cross between two organisms with different variations at one genetic locus of interest
hybrid generation were round. All the peas of this F1 generation have an Rr genotype. All the haploid sperm and eggs produced by meiosis received one chromosome
Monohybrid_cross
Method of DNA sequencing developed in 1977
Fredlake CP, Doherty EA, Barron AE (November 2004). "DNA sequencing and genotyping in miniaturized electrophoresis systems". Electrophoresis. 25 (21–22):
Sanger_sequencing
Study of the role of the genome in drug response
rational means to optimize drug therapy, with regard to the patients' genotype, to achieve maximum efficiency with minimal adverse effects. It is hoped
Pharmacogenomics
Human disease caused by paramyxovirus
global genotype. Genotypes A and B have not been observed in the wild since the 1990s. MuV has just one serotype, so antibodies to one genotype are functional
Mumps
Family of DNA sequences found in prokaryotic organisms
Y, Yoshida T (May 2014). "Diversification of CRISPR within coexisting genotypes in a natural population of the bloom-forming cyanobacterium Microcystis
CRISPR
Group of neurological disorders causing seizures
Need AC, et al. (August 2012). "Exome sequencing followed by large-scale genotyping fails to identify single rare variants of large effect in idiopathic generalized
Epilepsy
Persistence of a biological trait under uncertain conditions
mutational accessibility of distinct heritable phenotypes for a single genotype and reduces selective differences within a genetically diverse population
Robustness_(evolution)
Project that developed a haplotype map of the human genome
combination of alleles a person has is called a genotype. Genotyping refers to uncovering what genotype a person has at a particular site. The HapMap project
International_HapMap_Project
Species of the genus Orthohepadnavirus
divided into ten genotypes (A–J) and forty subgenotypes according to overall nucleotide sequence variation of the genome. The genotypes have a distinct
Hepatitis_B_virus
Estimation of effect of genetic variation on phenotypic variation of a trait
population, by examining the association between individual phenotype and genotype data, or even by modeling summary-level data from genome-wide association
Heritability
Cholesterol-lowering medication
rs429358 and rs4420638 which showed variable LDL-c response depending on the genotype when treated with atorvastatin. Another genetic variant that showed genome
Atorvastatin
Study designed to associate genetic variants with a large number of phenotypes
phenotypes to many possible DNA variants. The approach has proven useful in rediscovering previously reported genotype-phenotype associations, as well as in identifying
Phenome-wide association study
Phenome-wide_association_study
Multi-colored fur in cats
early development of two (fraternal twin) embryos with different color genotypes; these torties can pass only one color to their offspring, not both, according
Tortoiseshell_cat
1990–1991 conflict in the Middle East
down sarin than its type R counterpart. The authors "found that the PON1 genotype and hearing nerve agent alarms were independent and the findings robust
Gulf_War
Dependence of a gene mutation's phenotype on mutations in other genes
evolution as the process of moving uphill from one genotype to the next, nearby, fitter genotype. If all mutations are additive, they can be acquired
Epistasis
Member of the polyomavirus family
serological tests using specific antibodies or by using a PCR-based genotyping approach.[citation needed] Similarly to JC virus and SV40, BK virus has a
BK_virus
Medical condition
correlation between the genotype and phenotype. As a result, the CYP21A2 genotyping has high diagnostic value. However, the genotyping of the CYP21A2 gene
Congenital adrenal hyperplasia due to 21-hydroxylase deficiency
Congenital_adrenal_hyperplasia_due_to_21-hydroxylase_deficiency
Muscular disease in which the muscle fibers do not function correctly
Contemporary classification frameworks increasingly integrate the underlying genotype and pathomechanism alongside the clinical phenotype. In metabolic myopathies
Myopathy
Property of being from the same kinship as another person
variation in geographical and ethnic background and the loci chosen to genotype there is some 2.4% variation expected. Historically, some European nobles
Consanguinity
Autism associated with another medical condition
condition occurs in the context of a "phenotype first" clinically defined syndrome or from a "genotype first" molecularly defined syndrome.[clarification
Syndromic_autism
Disease of Mice
about 10% of cases. DOBV has four genotypes: Dobrava virus, Sochi virus, Kurkino virus, and Saaremaa virus. These genotypes are native to different rodent
Dobrava-Belgrade_virus
Species of mosquito
population replacement, where the population's overall genotype is replaced by a new genotype. This shows how populations of Asian tiger mosquitoes can
Aedes_albopictus
Heir to the Russian throne (1904–1918)
PMC 5324229. PMID 28250967. Evgeny I. Rogaev; et al. (8 October 2009). "Genotype Analysis Identifies the Cause of the 'Royal Disease'". Science. 326 (5954):
Alexei Nikolaevich, Tsarevich of Russia
Alexei_Nikolaevich,_Tsarevich_of_Russia
Inherited neurodegenerative disorder
people to have HD-free offspring without revealing their own parental genotype, giving no information about whether they themselves are destined to develop
Huntington's_disease
Subset of artificial intelligence
selection, using methods such as mutation and crossover to generate new genotypes in the hope of finding good solutions to a given problem. In machine learning
Machine_learning
DNA locus associated with variation in a quantitative trait
accurately than single-QTL approaches, especially in small mapping populations where the effect of correlation between genotypes in the mapping population
Quantitative_trait_locus
for potato based on multilocus amplified fragment length polymorphism genotyping". Proceedings of the National Academy of Sciences. 102 (41): 14694–14699
Timeline of historic inventions
Timeline_of_historic_inventions
Chronic lung condition
may develop in some people with alpha-1 antitrypsin deficiency, the only genotype of chronic obstructive pulmonary disease. This usually occurs a lot earlier
Emphysema
different approaches such as ecology, environmental physiology, epidemiology, molecular genetics and ethology have been taken. However, the approach with the
Cannibalism_in_poultry
Extinct species of mammoth
P.; Sher, A.; Gotherstrom, A.; Barnes, I. (2011). "Population-level genotyping of coat colour polymorphism in woolly mammoth (Mammuthus primigenius)"
Woolly_mammoth
Statistical method in genetic epidemiology
observational epidemiology studies. Given an individual's parents genotype, the genotype they inherit is truly random and so the method was initially proposed
Mendelian_randomization
Change in the heritable traits of populations
of genes within an organism's genome (genetic material) is called its genotype. The complete set of observable traits that make up the structure and behaviour
Evolution
Branch of genomics concerned with the genome of an individual
sequencing, analysis and interpretation of the genome of an individual. The genotyping stage employs different techniques, including single-nucleotide polymorphism
Personal_genomics
Evolutionary explanations of schizophrenia
in their behavior, not the genotype, and the fact of the matter is that selection works on phenotype rather than genotype. Another suggested hypothesis
Evolutionary approaches to schizophrenia
Evolutionary_approaches_to_schizophrenia
Genetic condition involving iron buildup
the body. Homozygosity for the C282Y genetic variant is the most common genotype responsible for clinical iron accumulation, though heterozygosity for C282Y/H63D
Hereditary_haemochromatosis
Mechanism of evolution by differential reproduction
how developmental processes evolved. While it is now recognised that genotypes can slowly change by random genetic drift, natural selection remains the
Natural_selection
Species of canine
population of painted dogs is known to have possessed a unique genotype, but these genotypes may be extinct. The African wild dog is the bulkiest and most
African_wild_dog
Human viral infection
and were first reported in 1988 when six were initially described (A–F). Two further types have since been described (G and H). Most genotypes are now
Hepatitis_B
Autoimmune disease
PMID 16820703. Nanba T, Watanabe M, Akamizu T, Iwatani Y (March 2008). "The -590CC genotype in the IL4 gene as a strong predictive factor for the development of hypothyroidism
Hashimoto's_thyroiditis
Autoimmune disorder
associated with other autoimmune diseases. The prevalence of the HLA-DQ2 genotype and gluten consumption has increased over time. Since untreated coeliac
Coeliac_disease
Application of systems biology approaches to cancer research
Cancer systems biology encompasses the application of systems biology approaches to cancer research, in order to study the disease as a complex adaptive
Cancer_systems_biology
Type of pattern of inheritance
each parent contributes one of two possible alleles for a trait. If the genotypes of both parents in a genetic cross are known, Mendel's laws can be used
Non-Mendelian_inheritance
Effect of learned behavior on evolution
was untenable because the argument is stated in terms of the individual genotype, whereas what is really exposed to the selection pressure is a phenotypically
Baldwin_effect
O'Connor, T.; Reissmann, M.; Hofreiter, M.; Ludwig, A. (7 November 2011). "Genotypes of predomestic horses match phenotypes painted in Paleolithic works of
Evolution_of_the_horse
Allele association in population genetics
interest only diploid genotypes can be observed. Assumptions need to be made to infer haploid frequencies. A different approach to estimating LD from
Linkage_disequilibrium
Total set of environmental factors affecting an organism
genes and environment may interact is through genotype-environment correlation and interaction. Genotype-environment correlation occurs because, for example
Envirome
Case where being homozygous for a set of alleles is advantageous
disruptive selection and divergent genotypes. Underdominance exists in situations where the heterozygotic genotype is inferior in fitness to either the
Underdominance
Desirable qualities in partners
identified significant divergence in the mate choice with accordance to HLA genotyping. Additional studies have been conducted simultaneously on African and
Mate_choice_in_humans
Lung disease involving long-term poor airflow
underlying mechanisms. One phenotype may be related to multiple endotypes. A genotype is based on the presence or absence of a genetic factor and its effects
Chronic obstructive pulmonary disease
Chronic_obstructive_pulmonary_disease
travel, tourism, insurance
GENOTYPE FIRST-APPROACH
GENOTYPE FIRST-APPROACH
Girl/Female
Hawaiian, Hebrew, Hindu, Indian, Tamil
First
Boy/Male
English
From the Thicket of Trees
Girl/Female
Latin
First.
Boy/Male
Muslim
First
Girl/Female
Tamil
First
Boy/Male
Tamil
First
Girl/Female
Indian, Sanskrit
First
Boy/Male
Hindu, Indian
First
Girl/Female
Biblical
First-born, first fruits.
Boy/Male
Czechoslovakian
First.
Girl/Female
Hindu, Indian
First
Boy/Male
Hindu, Indian
First
Girl/Female
Hindu, Indian
First
Girl/Female
Hindu
First
Girl/Female
Indian, Punjabi, Sikh
First
Boy/Male
Tamil
First
Girl/Female
Indian
First
Boy/Male
Indian
First
Biblical
first begotten; first fruits
Girl/Female
British, English
First; Always First
GENOTYPE FIRST-APPROACH
GENOTYPE FIRST-APPROACH
GENOTYPE FIRST-APPROACH
GENOTYPE FIRST-APPROACH
GENOTYPE FIRST-APPROACH
GENOTYPE FIRST-APPROACH
GENOTYPE FIRST-APPROACH
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