Hertwig's experiments studied the orientation of frog egg divisions. The frog egg has a round shape and the first division occurs in a random orientation. Hertwig compressed the egg between two parallel plates. The compression forced the egg to change its shape from round to elongated. Hertwig noticed that elongated egg divides not randomly, but orthogonally to its long axis. The new daughter cells were formed along the longest axis of the cell. This observation thus becam… WitrynaFind & Download Free Graphic Resources for Cute Frog. 86,000+ Vectors, Stock Photos & PSD files. Free for commercial use High Quality Images
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