Human fertilization and early development
7:59
Khan AcademySal Khan
Human fertilization and early development
Human fertilization and development begins with the race of hundreds of millions of sperm cells to fertilize an egg. The victorious sperm and egg unite, creating a zygote with genetic information from both parents. This single cell replicates, progressing through stages of a morula, blastocyst, embryo, and eventually a fetus. This complex ...
2018年2月12日
Fertilized Egg Recipes
We got this beautiful Python egg clutch from this beautiful yellow momma python 🥚🐍 The infertile egg might seem shocking or strange, but don’t worry, it’s totally common and a natural part of snake reproduction. So why did it happen when its siblings are perfectly fertile 🤔It’s simple biology, for a snake egg to be fertile, the female’s egg must be successfully fertilized by the male. This one either wasn’t fertilized at all, or developed stopped very early. A bit peculiar but totally normal!
We got this beautiful Python egg clutch from this beautiful yellow momma python 🥚🐍 The infertile egg might seem shocking or strange, but don’t worry, it’s totally common and a natural part of snake reproduction. So why did it happen when its siblings are perfectly fertile 🤔It’s simple biology, for a snake egg to be fertile, the female’s egg must be successfully fertilized by the male. This one either wasn’t fertilized at all, or developed stopped very early. A bit peculiar but totally normal!
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