Difference between revisions of "Phenotype"

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A phenotype is an observable and measurable trait (in the broadest sense; e.g., size, pigmentation, behaviors, social interactions, etc.) that results from a combination of an organisms underlying genotype and from environmental effects on development, behavior, etc.  Some phenotypes have a strong genetic basis while others have a very low level of heritability.  If a trait has no genetic basis and is only a result of environmental effects (such as haphazard morphological physical damage that was not correlated with any genetic predisposition) it is not a phenotype.   
 
A phenotype is an observable and measurable trait (in the broadest sense; e.g., size, pigmentation, behaviors, social interactions, etc.) that results from a combination of an organisms underlying genotype and from environmental effects on development, behavior, etc.  Some phenotypes have a strong genetic basis while others have a very low level of heritability.  If a trait has no genetic basis and is only a result of environmental effects (such as haphazard morphological physical damage that was not correlated with any genetic predisposition) it is not a phenotype.   
  
[[Pleiotropy]] and [[Genetic Heterogeneity]] are concepts that are involved in the connection between genotypes and phenotypes.  
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[[Pleiotropy]] and [[Genetic Heterogeneity]] are concepts that are involved in understanding the connection between genotypes and phenotypes.  
  
 
In humans stature is a common example of a phenotype with both a genetic (e.g., inherited growth factor activities) and environmental (e.g., nutrition) component.
 
In humans stature is a common example of a phenotype with both a genetic (e.g., inherited growth factor activities) and environmental (e.g., nutrition) component.
  
 
[[Category:Basic Knowledge]][[Category:Classical Genetics]][[Category:Quantitative Genetics]]
 
[[Category:Basic Knowledge]][[Category:Classical Genetics]][[Category:Quantitative Genetics]]

Latest revision as of 04:25, 24 January 2016

A phenotype is an observable and measurable trait (in the broadest sense; e.g., size, pigmentation, behaviors, social interactions, etc.) that results from a combination of an organisms underlying genotype and from environmental effects on development, behavior, etc. Some phenotypes have a strong genetic basis while others have a very low level of heritability. If a trait has no genetic basis and is only a result of environmental effects (such as haphazard morphological physical damage that was not correlated with any genetic predisposition) it is not a phenotype.

Pleiotropy and Genetic Heterogeneity are concepts that are involved in understanding the connection between genotypes and phenotypes.

In humans stature is a common example of a phenotype with both a genetic (e.g., inherited growth factor activities) and environmental (e.g., nutrition) component.