More Sexual Selection

 

Fertilization is not random, and the fastest sperm does not always win: in reality, the egg decides who succeeds.

While for decades we were taught that fertilization is a race won by the fastest sperm, a study published in Proceedings of the Royal Society B shows how human… pic.twitter.com/UMxdJ6Ft16

— Massimo (@Rainmaker1973) June 24, 2026

Zinc spark

 

When a child is conceived, there’s a flash of light called the “zinc spark” This confirms the fact that human life begins at fertilization. pic.twitter.com/0NsKrWecoe — Anna Lulis (@annamlulis) July 11, 2025