Ancestry prediction in 23 & Me is continuously updated as new individuals are genotyped. This can change an individual’s personal predicted ancestry by refining the region of ancestral origins or potentially identifying a less common ancestry in the lineage. This can similarly happen with animals where new breeds are identified in an individual’s ancestry as new breeds are genotyped. Explain how ancestry prediction is done and how that prediction can change as more individuals are genotyped.
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.
Ancestry prediction in 23 & Me is continuously updated as new individuals are
genotyped. This can change an individual’s personal predicted ancestry by refining the
region of ancestral origins or potentially identifying a less common ancestry in the lineage.
This can similarly happen with animals where new breeds are identified in an individual’s
ancestry as new breeds are genotyped. Explain how ancestry prediction is done and how
that prediction can change as more individuals are genotyped.
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