(n.) One from whom a person is descended, whether on the father's or mother's side, at any distance of time; a progenitor; a fore father.
(n.) An earlier type; a progenitor; as, this fossil animal is regarded as the ancestor of the horse.
(n.) One from whom an estate has descended; -- the correlative of heir.
Example Sentences:
(1) The high frequency of increased PCV number in San, S.A. Negroes and American Negroes is in keeping with the view that the Khoisan peoples (here represented by the San), the Southern African Negroes and the African ancestors of American Blacks sprang from a common proto-negriform stock.
(2) The 500-bp element arose by duplication of one half of a 180-bp ancestor and insertion of a foreign segment between the two duplicated parts followed by amplification.
(3) The five offspring are ancestors of all known carriers.
(4) They are related as fourth cousins once-removed and fifth cousins in multiple ways through the six nearest common ancestors of all four parents.
(5) An analysis of 54 protein sequences from humans and rodents (mice or rats), with the chicken as an outgroup, indicates that, from the common ancestor of primates and rodents, 35 of the proteins have evolved faster in the lineage to mouse or rat (rodent lineage) whereas only 12 proteins have evolved faster in the lineage to humans (human lineage).
(6) Writing in the journal Nature , the researchers describe how our ancestors lost another piece of DNA that gives rise to both facial whiskers and sensitive spines on the tip of the penis, both of which are found in chimpanzees and other non-human primates.
(7) With the use of the chimpanzee and human sequences to calibrate the rate of mtDNA evolution, the age of the common human mtDNA ancestor is placed between 166,000 and 249,000 years.
(8) The functional and phyletic significance of this material reveals a complex pattern of behavioral and phyletic diversity among large-bodied catarrhines in Europe and suggests that this diversity evolved in situ from circum-Mediterranean middle Miocene ancestors.
(9) Regressions of descendant net revenue on ancestor net revenue were predominantly negative but generally were not significant.
(10) This finding also suggests that the Hex, Mut, and PMS systems evolved from a common ancestor and that functionally similar mismatch repair systems could be widespread among procaryotic as well as eucaryotic organisms.
(11) -In several cases, second or third generation descendents of 3T3 cells were observed to repeat track patterns of their ancestor cell.
(12) Within the family, EIAV, HTLV-III, and visna appear to be equally divergent from a common evolutionary ancestor.
(13) We deduce that in ubiquitin genes, concerted evolution involves both unequal crossover and gene conversion, and that the average time since two repeated units within the polyubiquitin locus most recently shared a common ancestor is approximately 38 million years (Myr) in mammals, but perhaps only 11 Myr in Drosophila.
(14) During this evolution the interior of the core blocks evolved as a homogeneous repetitive structure, while ancestor repeat units remained as sequence relicts in the terminal parts.
(15) The divergence of a common ancestor protein into PF4 and gamma IP-10 may have accompanied the development of sophisticated immune and coagulation systems in vertebrates.
(16) Analysis of different Mus subspecies indicates that TLev1 integrated into a common ancestor of the species Mus musculus.
(17) In order to assess the possibility that such proteins may have arisen through processes of divergent evolution from a common ancestor, a graphical presentation is given which correlates the pattern of allowed single base substitutions defined by the genetic code with the associated changes in the structural properties of the encoded amino acids.
(18) In an attempt to reconstruct the universal ancestor of all present-day tubulin genes the intron positions in 38 different alpha- and beta-tubulin genes from plants, animals, fungi and protozoa were compared.
(19) This raises the possibility of two lines of descent from a common ancestor.
(20) Phylogenetic analysis indicates that these four main virus groups might have diverged from a common ancestor at about the same time, long before the spread of AIDS in humans.
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.