Scientists reported evidence that human blood cells may retain evolutionary traces linking them to single-celled ancestors dating back hundreds of millions of years.
Comparative genomic analysis suggested deep conservation of regulatory elements that first appeared in ancient marine organisms.
Evolutionary biologists said the findings illuminate how multicellular blood systems repurposed molecular machinery from distant precursors.
The research does not imply that modern blood contains living ancient microbes, but rather that genetic heritage persists through inherited pathways.
Further interdisciplinary work may explore whether these ancestral signatures influence immune responses or disease susceptibility today.
Comparative genomics compared regulatory sequences in blood cell lineages with those in ancient unicellular relatives preserved in marine genomic databases.
The evolutionary timeline referenced in the research spans hundreds of millions of years of divergence between early eukaryotes and vertebrate hematopoiesis.
Medical geneticists said ancestral pathway conservation could eventually inform understanding of blood disorders with poorly explained hereditary components.
Single-cell sequencing methods enabled researchers to compare ancient regulatory motifs with active genes in modern hematopoietic stem cells.
Evolutionary medicine researchers said the work opens questions about whether conserved pathways influence blood cancer susceptibility.
Paleogenomics specialists said the blood cell ancestry findings invite comparison with ancient DNA preserved in marine sediment archives from early eukaryotic eras.
New research uncovered evidence that human blood cells may trace their evolutionary origins to single-celled ancestors from 700 million years ago.
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Sources:
https://www.sciencedaily.com/news/top/