Question

Which phylogenetic model proposes that all three domains of life evolved from a pool of primitive prokaryotes?

a) Endosymbiotic theory
b) RNA world hypothesis
c) Three-domain system
d) Universal common ancestor

Answer 1

The "ring of life" model suggests that the three domains of life—Archaea, Bacteria, and Eukarya—originated from a common pool of gene-swapping prokaryotic organisms and includes HGT and genomic fusion in its structure.

Step-by-step explanation:

The phylogenetic model that proposes that all three domains of life evolved from a pool of primitive prokaryotes is known as the "ring of life" model. This model suggests that Archaea, Bacteria, and Eukarya all originated from a common pool of gene-swapping prokaryotic organisms. It accounts for the extensive horizontal gene transfer (HGT) and genomic fusion events that have occurred throughout evolutionary history. The "ring of life" model offers an alternative to the traditional tree-like structure of phylogeny and suggests a more interconnected origin of life forms.