The study of inheritance of traits is known as quantitative genetics. All living beings which include plants and animals, inherit certain characters from their parents. Quantitative genetics studies these features. The principle of Mendel is true in the case of continuous passing of traits. The field of quantitative genetics deals with phenotypes that are present in a segregated population. Hence, the graph that shows the data tends to be a binomial curve. The subject also takes into consideration the effect of environment on the traits’ development, making it more data based.
The basic principles guiding Quantitative genetics
Broadly speaking Quantitative genetics takes into consideration three kinds of variables, known as the phenotype symbolised by a “P” and the genotype variable symbolised by a “G”, and the third-factor variable is the environment represented by “E”. The phenotype variable is equated with the Environmental and genotype variable to give a simple equation P= G + E. Genotype refers to the total genetic variation in the population. Then there is the dominance variable “D” and the interactive variable “I”. The phenotype variance is a sum of all the other variances. You will be able to study all this in a genetics course you can choose on Schoolapply.co.in.
The importance of these variances
Quantitative genetics lets us study how variances in the environment and genetic information affects the total phenotype variance. This is and has been used to get rid of a genetic traits that are disadvantageous and increasing the positive traits. If the variance is due to genes, individuals with the desired genes can be selected for bettering the traits, and if it is due to the environment, then a strategy can be developed to optimise the environment as per the need. This provides control and helps to study genes. This data can also be used to good effect in forensic science.