Scientists have long struggled to understand what regulates sperm “capacitation,” the vital physiological process sperm must undergo to become capable of fertilizing an egg cell. Zinc plays a critical role.
Scientists from Lawrence Livermore National Laboratory and other organizations have shown that human influences significantly impact the size of the seasonal cycle of temperature in the lowest layer of the atmosphere.
A creative new application for CRISPR is a platform to spur evolution of specific genes inside cells. “EvolvR,” lets scientists shake up the DNA letters in their gene of choice until they find the right variation.