Cited by 116Origins and Evolution of LifeGenomics and Phylogenetic StudiesRNA and protein synthesis mechanisms

The Very Early Stages of Biological Evolution and the Nature of the Last Common Ancestor of the Three Major Cell Domains

Becerra, Arturo, Delaye, Luis, Islas, Sara, Lazcano, Antonio·2007·Annual Review of Ecology, Evolution, and Systematics

Abstract

Quantitative estimates of the gene complement of the last common ancestor of all extant organisms, that is, the cenancestor, may be hindered by ancient horizontal gene transfer events and polyphyletic gene losses, as well as by biases in genome databases and methodological artifacts. Nevertheless, most reports agree that the last common ancestor resembled extant prokaryotes. A significant number of the highly conserved genes are sequences involved in the synthesis, degradation, and binding of RNA, including transcription and translation. Although the gene complement of the cenancestor includes sequences that may have originated in different epochs, the extraordinary conservation of RNA-related sequences supports the hypothesis that the last common ancestor was an evolutionary outcome of the so-called RNA/protein world. The available evidence suggests that the cenancestor was not a hyperthermophile, but it is currently not possible to assess its ecological niche or its mode of energy acquisition and carbon sources.

Integrity signals

Registry

Crossref · 10.1146/annurev.ecolsys.38.091206.095825

Cites

86 of 86 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

We couldn’t retrieve this paper’s full text, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • All known life evolved from a single ancestor or ancestral community, so every life-form shares a common set of inherited properties.

    “Because all known life evolved from a single ancestor or ancestral community, every life-form shares a common set of inherited properties (Woese, 1998; Becerra et al., 2007; Theobald, 2010).”

    From The Astrobiology Primer v2.0 (2016) · cites this paper as Becerra et al., 2007

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Becerra, A., Delaye, L., Islas, S., & Lazcano, A.
Affiliations
Universidad Nacional Autónoma de México (MX)
Venue
Annual Review of Ecology, Evolution, and Systematics
Published
2007-12-01
Volume
38
Issue
1
Pages
361-379
ISSN
  • 1543-592X (ISSN-L)
  • 1545-2069
OpenAlex
W2117729494
Cited by
115
References
86
Citations by year
2026: 3 · 2025: 5 · 2024: 8 · 2023: 5 · 2022: 13 · 2021: 16 · 2020: 10 · 2019: 3 · 2018: 3 · 2017: 4 · 2016: 5 · 2015: 4 · 2014: 6 · 2013: 3 · 2012: 8
FWCI
0.48
Type
journal article
Language
en
Open access
closed
Locations
Annual Review of Ecology Evolution and Systematics (publishedVersion)
Funders
University of Virginia
Topics
  • Physical Sciences › Physics and Astronomy › Astronomy and Astrophysics › Origins and Evolution of Life
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › RNA and protein synthesis mechanisms
Keywords
last common ancestor, horizontal gene transfer, gene loss, RNA world, prokaryotes, hyperthermophiles, origin of life

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review