This two-minute video provides brief background on the use of zebrafish as a model in studying animal development, before showing a time-lapse sequence of a fertilized zebrafish egg developing into a larva. The video includes some annotations that help orient the viewer during the time-lapse sequence. Teachers might want to mute the narration beginning at 0:42 min to avoid giving students too much information.
This phenomenon could stimulate the following driving questions:
- How does the zebrafish develop from one cell to the many cells that make up the larva?
- How do the zebrafish cells divide?
- How are the developing zebrafish cells similar and different from each other?
- If all cells in the zebrafish develop from the same original cell, then how do some cells develop differently than others?
- How are cell division and growth related?