An indepth study on population and quantitave genetics, including changes in gene and genotype frequencies in large and small populations, population variance and covariance, inheritance and heritability, selection and genetic advance, analysis of combin(An indepth study on population and quantitave genetics, including changes in gene and genotype frequencies in large and small populations, population variance and covariance, inheritance and heritability, selection and genetic advance, analysis of combin)