Early life forms reproduced without DNA
The hypothesis that early life forms reproduced without DNA is strongly supported by scientific literature on the RNA World and prebiotic evolution, which indicates that RNA and other molecular precursors preceded DNA-based genetic systems.
The claim aligns with the widely accepted scientific framework of the RNA World hypothesis and related studies on early biogenesis, which posit that genetic storage and replication initially occurred using RNA or other non-DNA information systems before the evolutionary transition to DNA.
Chatterjee S, Yadav S. The Coevolution of Biomolecules and Prebiotic Information Systems in the Origin of Life: A Visualization Model for Assembling the First Gene.. 2022. https://doi.org/10.3390/life12060834
The paper discusses the emergence of noncoding RNAs and prebiotic information systems that preceded DNA.
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Kankia B. Trinity of G-tetrads and origin of translation.. 2022. https://doi.org/10.1186/s13062-022-00327-9
It describes models where early life forms utilized single-step structures like G-tetrads and RNA-like precursors before the advent of conventional genetic machinery.
Medvegy A, Abramov O, Kremer B, Mojzsis S. Whence the demise and fall of the RNA World?. 2026. https://doi.org/10.21203/rs.3.rs-9212823/v1
It outlines an early developmental stage in biology where life existed as RNA or ribonucleoprotein entities before the transition to a DNA world.
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