By comparing the genetic blueprints of an array of animals, scientists are gaining new insights into our own species and all we share with other creatures.
One of the most striking revelations is that certain passages in the instructions for life have persisted across evolutionary time, representing a through line that binds all mammals – including us.
“It’s just the wonder of biology, how we are so similar and dissimilar to all the things around us,” said O’Connor, who wasn’t involved in the research. “It’s the sort of thing that reminds me why it’s cool to be a biologist.” They found that certain regions of these genomes have stayed the same across all mammal species over millions of years of evolution.
Researchers theorized that long-preserved regions probably serve a purpose and are likely what they call “regulatory elements” containing instructions about where, when and how much protein is produced. Scientists identified more than 3 million of these in the human genome, about half of which were previously unknown.
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