We may have parted ways with our primate cousins millions of years ago, but a new study shows just how human beings continue to evolve in ways we never imagined.
The team behind this new study subsequently created a genetic ancestral tree to compare those tiny sequences found in our genomes against those in 99 other vertebrate species, tracking the evolution of the genes over time.
"We sought to identify and examine cases in the human lineage of small proteins that evolved out of previously noncoding sequences and acquired function either immediately or shortly thereafter," the team writes in"This is doubly important: for our understanding of the intriguing, and still largely mysterious phenomenon of de novo gene birth, but also for our appreciation of the full functional potential of the human genome.
"When you start getting into these small sizes of DNA, they're really on the edge of what is interpretable from a genome sequence, and they're in that zone where it's hard to know if it is biologically meaningful,"One gene with a role in constructing our heart tissue emerged when an ancestor common to humans and chimps branched off from the gorilla's ancestry.
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