Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Presentazione di PowerPoint
Document related concepts
The Bell Curve wikipedia , lookup
Pathogenomics wikipedia , lookup
Long non-coding RNA wikipedia , lookup
Population genetics wikipedia , lookup
Genetic engineering wikipedia , lookup
Dual inheritance theory wikipedia , lookup
Site-specific recombinase technology wikipedia , lookup
Genetically modified crops wikipedia , lookup
Essential gene wikipedia , lookup
Polycomb Group Proteins and Cancer wikipedia , lookup
Artificial gene synthesis wikipedia , lookup
Epigenetics of diabetes Type 2 wikipedia , lookup
Human genetic variation wikipedia , lookup
Epigenetics of neurodegenerative diseases wikipedia , lookup
History of genetic engineering wikipedia , lookup
Genome evolution wikipedia , lookup
Gene expression programming wikipedia , lookup
Genomic imprinting wikipedia , lookup
Minimal genome wikipedia , lookup
Ridge (biology) wikipedia , lookup
Epigenetics of human development wikipedia , lookup
Behavioural genetics wikipedia , lookup
Microevolution wikipedia , lookup
Nutriepigenomics wikipedia , lookup
Public health genomics wikipedia , lookup
Heritability of IQ wikipedia , lookup
Gene expression profiling wikipedia , lookup
Genome (book) wikipedia , lookup
Biology and consumer behaviour wikipedia , lookup
Transcript
Nature or nurture? Definitions The expression of many common diseases such as cardiovascular disease, hypertension, diabetes, asthma, psychiatric disorders, and certain cancers is determined by genetic background, environmental factors, and lifestyle. Polygenic: multiple genes are thought to contribute to the phenotype. Complex genetic traits may be influenced by modifying genes that are not linked to the main gene involved in the pathogenesis of the trait. This type of gene-gene interaction, or epistasis, plays an important role in polygenic traits that require the simultaneous presence of variations in multiple genes in order to result in a pathologic phenotype. Polygenic Inheritance: a pattern responsible for many features that seem simple on the surface. Many traits such as height, shape, weight, color, and metabolic rate are governed by the cumulative effects of many genes. Polygenic traits are not expressed as absolute or discrete characters, as was the case with Mendel's pea plant traits. Instead, polygenic traits are recognizable by their expression as a gradation of small differences (a continuous variation). The results form a bell shaped curve, with a mean value and extremes in either direction. Multifactorial: multiple genes are assumed to interact with environmental factors.
