转发！中国科学家发现基因封条

Core Viewpoint - Recent research by a team led by Academician Cao Xiaofeng from the Chinese Academy of Sciences provides significant evidence supporting Lamarckian evolution, suggesting that environmental pressures can trigger and select for epigenetic variations, allowing species to adapt and survive over time [1] Group 1: Research Findings - The study indicates that rice varieties from warmer southern regions have developed increased cold resistance after being relocated to the colder northeastern regions of China [1] - Initially, scientists suspected that the cold-resistant rice had undergone genetic mutations; however, the genes responsible for cold resistance did not change [1] - The research revealed that these southern rice varieties inherently possessed cold-resistant traits, which were previously "locked" by specific chemical groups acting as a "seal" on the genes [1] Group 2: Mechanism of Adaptation - When subjected to the cold environment in the northeast, the rice plants were forced to "remove" the chemical seals on their cold-resistant genes, enabling them to withstand cold temperatures [1] - This adaptation not only allows the rice to survive in harsher conditions but also ensures that the cold-resistant traits can be passed on to future generations [1] - The findings highlight that evolution is not solely dependent on random genetic mutations but can also be influenced by environmental factors that activate latent biological capabilities [1]