Because the term "fish" is defined negatively, and excludes the tetrapods (i.e., the amphibians, reptiles, birds and mammals) which descend from within the same ancestry, it is paraphyletic, and is not considered a proper grouping in systematic biology.
We are, after all, related by the same ancestry from the origins of humanity itself.
Other characteristics: BG's share the same ancestry and origin as Galloways do (originating from the southern lowlands of Scotland).
The application of our method to data from 14 populations across the world revealed that positive-selection events tend to cluster in populations of the same ancestry.
Group membership was assigned based on all four grandparents being of the same ancestry or being of multiple ancestries.
Twenty lean subjects from the same genetic ancestry (Northern European White), with a BMI ≤ the 10th percentile for age and sex and no prior history of having had a BMI> 25th percentile for more than a 2 year consecutive period, were recruited from the Ottawa community.
We perform ancestry inference by simultaneously localizing on the map the recent ancestors of an admixed individual and partitioning the admixed genome into segments inherited from the same ancestor (i.e., locus-specific ancestry).
Rosenberg et al. [ 26] investigated the genetic relationship of human populations and found that populations from the same continent share more ancestry than random populations [see also [ 7]].
Patients of both Thai and Chinese ethnic origin revealed a higher relative risk from the same allele, despite their distinct ancestry.
