For years, we believed conception was a race—a chaotic sprint where the fastest sperm won. But recent research has flipped this story on its head. A study from Stockholm University has revealed that human eggs actively release chemical signals to attract specific sperm, while ignoring others. In other words, fertilization isn’t simply a matter of speed—it’s a selective biological process, where the egg plays an active role in choosing its match. This breakthrough not only redefines our understanding of human reproduction but also opens new doors in fertility science. It could help explain unexplained infertility, influence IVF treatments, and even shed light on genetic compatibility. What was once seen as random is now understood as highly strategic biology—and the egg, not the sperm, is the ultimate decision-maker in the creation of life. #BiologyFacts #FertilityScience #YouWereChosen #HumanReproduction #ScienceBreakthrough

The age-old question is cracked: the chicken came first. Scientists at the University of Sheffield discovered that ovocleidin-17 (OC-17) — a protein essential for forming eggshells — is only found in a hen’s ovaries. That means no hen = no eggshell = no egg. Simple biology, not just philosophy. So while evolutionary steps brought us proto-chickens, the first true chicken egg could only come from a chicken. Science wins this round. #ChickenOrEgg #ScienceSolvedIt #BiologyFacts #EvolutionExplained #FunScience