Mon Jan 13 00:00:00 UTC 2025: ## Two Studies Shed Light on the Mystery of Gene Creation
**CHENNAI, INDIA (January 13, 2025)** – New research from the University of Nevada, Reno, and the Max Planck Institute for Evolutionary Biology Plön, Germany, offers groundbreaking insights into the creation of new genes. Published in *Molecular Biology and Evolution* and *Genome Biology and Evolution*, respectively, the studies address a long-standing question in biology.
The research builds upon Susumu Ohno’s 1970 theory of gene duplication as the primary source of new genes. However, Ohno’s theory lacked an explanation for how cells avoid the negative effects of producing double the amount of protein. The Nevada researchers found that increased methylation of duplicated gene promoters prevented excessive protein production, allowing the duplicate gene to survive and potentially evolve new functions. They also discovered that this higher methylation rate increased the mutation rate, further fueling genetic diversification.
The Max Planck study took a different approach, inserting random DNA sequences into human cells. They found that a significant portion of these random sequences impacted cell growth, suggesting that even random DNA insertions can behave like nascent genes, providing raw material for evolution.
Both studies highlight the complex interplay between gene duplication, methylation, mutation, and the survival of new genetic material. The researchers also note the mystery of seemingly non-essential genes, like the blood type variants (A, B, AB, O), which have been conserved across many species despite lacking clear functional necessity in some instances. Further research is needed to fully understand this evolutionary puzzle. The findings represent a significant step towards a more complete understanding of how genetic diversity arises.
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