Darwin's theory of natural selection forms the basis of our understanding of evolution, but it was incomplete. He did not know the mechanism that produces variation. Group of answer choices True False
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.
Life adapts as well as diversifies on the basis of change in circumstances in order to fit into niches through the process described as evolution. Change is considered to be constant and if individuals were not able to respond to environmental alterations, living beings would have perished by now. Thus, evolution is considered a complex process that is responsible for determining the origin of life.
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