The exact moment a new life starts #fertilization #science #pregnancy

追加: 2026-06-06

[00:00:00]Fertilization isn't just a meeting, it's a biological explosion. Here is the step-by-step breakdown of the moment you were created. [music] The egg has a tough outer shell called the zona pellucida. The winning sperm releases special enzymes from its head to drill through this wall.

[00:00:14]It's a high-stakes entry. Once inside, the sperm sheds its tail. The father's 23 chromosomes meet the mother's 23.

[00:00:22]In this split-second, your eye color, height, and personality traits are all locked in.

[00:00:28]This is no longer [music] an egg or a sperm. It's a zygote, the first stage of a human life.

[00:00:33]Science is amazing, isn't it? Follow Med Life link for video three.

[00:00:37]How the sperm actually travels.