Which of the following apply to both genetic drift and gene flow? Both always reduce the observed heterozygosity in a population. Both are nearly impossible to observe in wild and are ideas built primarily on theory. Both always result in the accumulation of deleterious alleles over time. Both affect the amount of genetic variation within populations. All are correct
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.
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