Developmental biology
5 videos
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AP Biology - Developmental Biology: From One Cell to Trillions
Explains how a single fertilized cell becomes trillions of specialized cells through division, differentiation, and apoptosis to build a complete body.
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AP Biology - From Zygote to Embryo: Early Development
Learn how a single-cell zygote divides and develops into trillions of specialized cells, forming both body cells and reproductive cells that pass on genetic information.
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AP Biology - Stem Cells and Potency: Totipotent to Multipotent
This video explains stem cell potency, from totipotent to pluripotent to multipotent, and compares embryonic vs. adult stem cells and their differentiation capabilities.
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AP Biology - How Cells Differentiate: Gene Expression and Induction
This video explains how cells with identical DNA differentiate into specialized types through gene expression, transcription factors, and signaling mechanisms during development.
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AP Biology - Apoptosis: Why Your Cells Are Programmed to Die
This video explains apoptosis, the process of programmed cell death that sculpts the body during development, maintains cell balance, and prevents cancer by eliminating damaged cells.