What's the difference between ancestral and atavic?
Ancestral
Definition:
(a.) Of, pertaining to, derived from, or possessed by, an ancestor or ancestors; as, an ancestral estate.
Example Sentences:
(1) We conclude that chloramphenicol resistance encoded by Tn1696 is due to a permeability barrier and hypothesize that the gene from P. aeruginosa may share a common ancestral origin with these genes from other gram-negative organisms.
(2) The Mexican-Americans of Starr County, Texas, classified by sex and birthplace, were studied to determine the extent of genetic variation and contributions from ancestral populations such as Spanish, Amerindian and West African.
(3) From the decreased alignment at the N-terminus and the presence of additional residues compared with bacterial phosphorylases, we conclude that the regulatory sequences that also carry the phosphorylation site in the muscle enzyme were joined to a presumed ancestral precursor gene by gene fusion after separation of the eukaryotic and prokaryotic lines of descent.
(4) The HindIII restriction patterns of 3 of the ancestral S. enteritidis plasmids were identical to the modern 38 MDa plasmid, while all contained identical bands of 3.5, 2.7 and 1.9 kb.
(5) Before 1948, the Bedouin tribes lived and grazed their animals on much of the Negev, claiming ancestral rights to the land.
(6) The US had said a Kenyatta win would have "consequences" and, when president Barack Obama undertook on a tour of Africa in June and July, he did not visit his ancestral home.
(7) These results support a hypothesis which proposes that ancestral SIN virus diverged into two distinct groups.
(8) It is suggested that the multicopper oxidases have evolved from an ancestral copper protein which presumably contained all the ligands required for the binding of one binuclear and two additional mononuclear metal centers.
(9) The male is intermediate between the female and the ancestral condition observed in other turtle species.
(10) This result implies that these molecules arose by way of a series of partial gene duplications of a primitive gene that coded for a smaller ancestral protein.
(11) This implies that all of these neurotransmitter transporters may have evolved from a common ancestral gene that diverged into the GABA, glycine and catecholamine subfamilies at nearly the same time.
(12) PSI-G and PSI-K probably have evolved from a gene duplication of an ancestral gene.
(13) The results are interpreted to indicate that at least the C-terminal portions of the core histones evolved from a common ancestral protein.
(14) The approach is illustrated by several examples of previously unknown correspondences with important biological implications: Drosophila elongation factor Tu is shown to be encoded by two genes that are differently expressed during development; a cluster of three Drosophila genes likely encode maltases; a flesh-fly fat body protein resembles the hypothesized Drosophila alcohol dehydrogenase ancestral protein; an unknown protein encoded at the multifunctional E. coli hisT locus resembles aspartate beta-semialdehyde dehydrogenase; and the E. coli tyrR protein is related to nitrogen regulatory proteins.
(15) Although most studies emphasise the similarity of the australopithecines to modern man, and suggest, therefore, that these creatures were bipedal tool-makers at least one form of which (Australopithecus africanus--"Homo habilis", "Homo africanus") was almost directly ancestral to man, a series of multivariate statistical studies of various postcranial fragments suggests other conclusions.
(16) The conservation of genomic organization, together with the high sequence homology, indicates that the mouse H+,K(+)-ATPase beta and Na+,K(+)-ATPase beta 2 subunit genes originated from a common ancestral gene.
(17) The manor house in The Private Patient has been sold by its ancestral owners to cover their debts and bought by self-made plastic surgeon George Chandler-Powell.
(18) Characterization of the gene organization within disease-associated ancestral haplotypes will provide new insights into the functional role and evolution of the major histocompatibility complex.
(19) Similarities observed between these two genes with respect to both peptidic sequence and intron position strongly suggested that this locus originated from the duplication of an ancestral transcription unit.
(20) Our findings substantially increase the evidence indicative of a human-chimpanzee-gorilla clade with ancestral separations around 8 to 6 Myr ago.
Atavic
Definition:
(a.) Pertaining to a remote ancestor, or to atavism.
Example Sentences:
(1) Down syndrome impresses us as a paradigm of increased developmental variability due to a deceleration of the rate of development (neoteny) with many anomalies of incomplete morphogenesis (vestigia), atavisms, increased morphometric variability with many decreased means, increased variances, and increased fluctuating asymmetry.
(2) Through herd mentality, or pure atavism, the leaderless state was drawn back to its one familiar point of reference, the tribal system of its ancestors, and with it the full force of its legacy: a return to the hatred of the past, to intractable rivalries, violent raids and an unquenchable thirst for vengeance.
(3) A varimax rotated factor analysis of the ATAV yielded one primary factor accounting for 85.9% of the variance.
(4) In the analysis of laryngeal anomalies in 30 selected phoniatric patients by CT examination, 2 atavisms of the laryngeal skeleton were found.
(5) Results showed slight but significant correlations between the ATAV and F (r = .17, p less than .044) and Formal Content of Dogmatism (r = .20, p less than .023) Scales for the United States sample.
(6) The recurrence of CK-BB may indicate atavism, and the enhanced anaerobic glycolysis and the accelerated energetic turnover may be on of the metabolic characteristics of leukemic cell.
(7) The survey instrument included the 20-item Attitudes Toward AIDS Victims (ATAV) Scale, the 18-item F Scale, the Form A, and 14-item Formal Content of Dogmatism Scale.
(8) The presence of Purkinje-like cells in ectopic locations within the heart and their association with satellite cells is likely a form of embryological atavism.
(9) Atavisms of responding have been observed to play an essential role in real perversions.
(10) Presence of these normally vestigial structures is considered a form of atavism.
(11) The following phases yielded significant correlations between the ATAV scale and attitudes toward homosexuals (.60, p less than .001), homosexual parenting (.64, p less than .001), other minority groups (.33, .37, p less than .001), capital punishment (-.27 p less than .001), and sexually liberal attitudes (.22, .37, .23, p, less than .025).
(12) The dynamic phenomena (such as homodynamy, coadaptation, parallel evolution, orthogenesis, Cartesian transformation, typostrophy, hetermorphosis, systemic mutation, and spontaneous atavism) have no causal explanation, although they are responsible for all directed phenomena in macroevolution.
(13) The persisting alpha-fetoprotein synthesis in ataxia-telangiectasia, the morphologic atavisms in Down or trisomy 13 syndromes, and the delayed growth or fetal to adult hemoglobin switch in diabetic embryopathy all exemplify developmental asynchrony.
(14) The authors propose the term atavistic to designate a gene producing an ancestral phenotype (atavism).
(15) And instead of being a temporary festivity, the ornaments of new nationhood – all those recomposed national anthems and redesigned banknotes, postage stamps and ceremonial uniforms – were hardening into real statehoods with real borders, inspired not by universal enlightenment values, but by the atavisms of ancient religious and ethnic conflicts.
(16) This study reports on the development of a Likert scale that measures attitudes toward AIDS victims (ATAV) in five phases.