A new study reveals that selfish chromosomes exploit the Overdrive gene to destroy rival sperm, boosting their chances of passing into the next generation. The gene acts as a quality control checkpoint during sperm development, normally eliminating abnormal sperm cells, but selfish chromosomes hijack the system to kill competitors.
A study found that residents of economically disadvantaged areas were more likely to use violence against others after experiencing injuries. The research suggests that targeted interventions may be necessary to address neighborhood-level issues contributing to violence.
A study of 699 Black participants found that transitioning to an integrated school between grades 1-6 was associated with improved cognitive aging outcomes. Those who attended integrated schools had statistically significant advantages in executive function and semantic memory compared to those who only attended segregated schools.