LACA Stands for the Last Archaeal Common ancestor is believed to be sister to LBCA (The Last bacterial common ancestor) and is a descendent of LUCA ( Last universal Common Ancestor).
NATURE MAY 6 2015 AND NATURE JULY 9 2015
| Cellular life forms are like Matryoshka/Babushka Dolls that show the history of our earliest ancestors in the center and novel life forms in the periphery. The history of the conversion of free living life forms to free living parasites, symbionts, and agents of genetic change shows a helical evolutionary pattern. The mobile genetic elements show a Mirror in Mirror display of newer genetic elements nesting in the center of older genetic elements . This nesting phenomenon is exemplified by insertion sequences in archaea and the insertion history of DNA transposons. Encapsulation processes work in tandem with integration processes to evolve life. Analysis of twintrons, symbioses, and other forms of nesting will help unravel the pathways of evolution. What cell developed first on Earth Archaea or Eubacteria? 1. Chronocytes arose first and gave rise to eocytes and eubacteria. Eocytes gave rise to archaea and eukaryocytes.Forterre initially proposed that viral infections created 3 separate superkingdoms and thus there is no monophyly of all cellular life forms. (see Three RNA cells for ribosomal lineages and three DNA viruses to replicate their genomes: a hypothesis for the origin of cellular domain), his recent proposal is that LUCA was a Chronocyte which gave rise to bacteria and a common ancestor of eukaryocytes and archaea.(ie. EOCYTE)  LUCA-CHRONOCYTES DEVELOPED THE FIRST REPLICATIVE METABOLIC SYSTEMS WITH STABLE MEMBRANES. WHICH EVOLVED INTO EUBACTERIA AND WERE TRANSFORMED BY VIRAL INFECTIONS / OTHER SYMBIOTIC PROCESSES INTO ARCHAEA AND EUKARYOCYTES. PARASITIC FORMS OF CHRONOCYTES AND PRE LECA CELLS EVOLVED INTO BACTERIOPHAGES, VIROPHAGES, AND MEGAVIRUSES. ( SEE 4TH NCLDV VIRAL DOMAIN OF DNA REPLICATION PROTEINS ROOTED BETWEEN THE ARCHAEA AND EUKARYOTA AND PHYLOGENETIC AND PHYLETIC STUDIES OF INFORMATIONAL GENES IN GENOMES HIGHLIGHT EXISTENCE OF A 4TH DOMAIN OF LIFE INCLUDING GIANT VIRUSES)2. ARCHAEA/EOCYTES AROSE BEFORE EUBACTERIA 3. ARCHAEA ARE DERIVED FROM EUBACTERIA . WHICH TRANSCRIPTIONAL, TRANSLATIONAL, REPLICATIVE, METABOLIC. AND STRUCTURAL GENES AROSE FIRST WITHIN THE FRAMEWORK OF THE PUBLIC GOODS HYPOTHESIS ?DID MONODERM PROKARYOTES EVOLVE INTO DIDERMS OR VICE VERSA ?How did mobile genetic elements effect the origin and evolution of prokaryotes?Evolution based on PHYSIOCHEMISTRY OF OUR SOLAR SYSTEM, protoplanet ATMOSPHERE , HYDROSPHERE, AND CRUST.What is the origin and evolution of prokaryotic vesicles ?Phylogenetic Trees , Species Trees, Taxonomy Browser of Euryarchaea and Eubacteria, PROKARYOTIC NEWS©1994-2020 Foster P. Carr MD all rights reserved |
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