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.
all mechanisms of evolution are random
Evolution is the process of continuous change from a lower, simpler or worse to a higher or more complex and better state. This is any net directional change or any cumulative change in the characteristics of organisms or also population over many generations.
There are mainly three types of evolution that are divergent, parallel and convergent evolution.
It is important because it explains how life developed on earth and how different species are connected. It triggered by gene pool changes.
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