The cause and effect relationship between genetic variation and traits is as follows:
The variance in the phenotype in a population, that is, the psychological and physical traits that manifest in individuals are attributable to genetic variation, that is, the different genes that each person in the population studied has.
- Genetic variability is caused by mutations, recombinations and alterations in the karyotype, impacting the variability of a trait.
- The proportion of phenotypic variation, which is due to total genetic variation is what is known as heritability.
Therefore, we can conclude that the observable traits of an organism can be impacted by the manifestation of genetic variability.
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