Heritability is a measure of how well differences in people's genes account for differences in their traits. ... A heritability close to one indicates that almost all of the variability in a trait comes from genetic differences, with very little contribution from environmental factors.
Both general environmental variance and genotype by environment interaction are aspects of a characteristic known as phenotypic plasticity. Phenotypic plasticity is a change in the phenotype associated with a given genotype in response to different environmental conditions.
What is the difference between phenotypic and genotypic variation?
Variation, in biology, any difference between cells, individual organisms, or groups of organisms of any species caused either by genetic differences (genotypic variation) or by the effect of environmental factors on the expression of the genetic potentials (phenotypic variation).
R-Code
library(variability)
gen.var(testdata[3:8],testdata$Genotypes,testdata$Replication)
#Heritability
#Genptypic_Variation
##genetic_parameters
