Genetic Variation
Genetic variation refers to the variation in the genome sequences between individual organisms of a species. Individual differences or population differences can both be referred to as genetic variations. It is primarily caused by mutation, but other factors such as genetic drift and sexual reproduction also play a major role.
Quantitative Genetics
Quantitative genetics is the part of genetics that deals with the continuous trait, where the expression of various genes influences the phenotypes. Thus genes are expressed together to produce a trait with continuous variability. This is unlike the classical traits or qualitative traits, where each trait is controlled by the expression of a single or very few genes to produce a discontinuous variation.
Which are the Several steps that lead to an understanding of genetic phenomena?
Genetic phenomena includes all the biological processes which has the ability to express,maintain and can transfer the genetic information by the encoded genes from one generation to other.
This information is transferred from parental generation to offsprings encoded in the small pieces of DNA.
Modern genetics started with Mendel's studies of the nature of inheritance in plants.An organism has thousand of genes and these genes can be transcribed into mRNA and translated into proteins by the process of translation.Mutations that do have an effect are usually harmful, but some can also be beneficial.About 70% of this are harmful and others can be weakly influential or neutral.
Step by step
Solved in 2 steps
