(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.
Revert
Definition:
(v. t.) To turn back, or to the contrary; to reverse.
(v. t.) To throw back; to reflect; to reverberate.
(v. t.) To change back. See Revert, v. i.
(v. i.) To return; to come back.
(v. i.) To return to the proprietor after the termination of a particular estate granted by him.
(v. i.) To return, wholly or in part, towards some preexistent form; to take on the traits or characters of an ancestral type.
(v. i.) To change back, as from a soluble to an insoluble state or the reverse; thus, phosphoric acid in certain fertilizers reverts.
(n.) One who, or that which, reverts.
Example Sentences:
(1) Friend erythroleukemia cells were induced to differentiate by dimethyl sulfoxide (DMSO) and hexamethylene-bis-acetamide (HBMA) in order to investigate whether their lipid characteristics, common to other systems of transformed cells, revert to a normal differentiation pattern.
(2) Upon depletion of ATP in contraction, the P2 intensity reverted to the original rigor level, accompanied by development of rigor tension.
(3) Lipoprotein concentrations reverted to normal after substitution with thyroxine (T4) until the euthyroid state was reached.
(4) As compared with solvent-treated control, no significant increases were observed in the number of revertant colonies in all tester strains in both systems with and without mammalian metabolic activation (S9 Mix).
(5) Proteolytic activity of cell extracts from revertants of Shigella flexneri L-forms as well as biochemical properties of these strains and their sensitivity to antibiotics were studied.
(6) A total of 43 tra-3 revertants (one intragenic, 42 extragenic) have been isolated and analyzed, in the hope of identifying new sex-determination loci.
(7) All cellular signals characterized so far are reverted during retrodifferentiation: Redistribution of PKC and down-regulation of c-fos and c-jun contribute to an interruption of the differentiation-associated transsignaling cascade.
(8) Fruiting revertants of these strains accumulate wild-type levels of alpha-mannosidase-1 activity, suggesting that both the enzymatic and morphological defects are caused by single mutations in nonstructural genes essential for early development.
(9) All revertants to prototrophy tested showed the rifampin-sensitive (Rifs) property.
(10) This product was glycosylated since it bound to concanavalin A-Sepharose and reverted to the 66-kDa polypeptide after treatment with endoglycosidase H. This glycosylated product was resistant to protease digestion and fractionated with microsomal membranes on sucrose gradients, indicating that it is incorporated into the microsomal membranes.
(11) Of the five patients who had diabetes prior to treatment, three reverted to normal glucose tolerance during treatment.
(12) We studied the activation of polyoma middle T expression in revertant cells carrying transcriptionally inactive copies of the middle T (pmt) oncogene.
(13) However, with subsequent subcultivation, eight isolates reverted back to the standard of exhibiting motility and pellicle formation.
(14) A significant correlation was observed between prolactin and creatinine concentrations in these patients (r = 0.45 P less than 0.005) and prolactin reverted towards normal after successful renal transplantation.
(15) Conversely, when obesity was permitted to recur by giving the mice free access to food, PRL levels reverted back to the original obese pattern.
(16) We have isolated and characterized revertants of ts24, a member of the A complementation group of Sindbis HR mutants, that we had demonstrated previously to have a temperature-sensitive defect in the regulation of minus-strand synthesis.
(17) All revertants of adA24 carried dominant suppressor mutations.
(18) Using this technique we have cloned and sequenced the structural protein region of ts20 and of several revertants and concluded that the mutation was a change from histidine to leucine at amino acid 291 of E2.
(19) To study important epitopes on glycoprotein E2 of Sindbis virus, eight variants selected to be singly or multiply resistant to six neutralizing monoclonal antibodies reactive against E2, as well as four revertants which had regained sensitivity to neutralization, were sequenced throughout the E2 region.
(20) Enzymatic data for those ICR-191A-induced revertants of hisD3018 arising within the hisD gene indicate that the enzyme is wild type and, therefore, that ICR-191A can cause deletions as well as additions of single base pairs.