Videos that have been shown in Biology 441 lectures

January 11

early cleavages in a fertilized mouse egg

link to the video of sea urchin cleavage, web site of Rachel Fink of Mt. Holyoke College

January 13

gastrulation in an amphibian egg

neurulation in a chick embryo

January 15

video of an early fish egg (Fundulus)

another video of early cleavage

animation of teleost gastrulation (epiboly)

January 20

animation of cleavage in a frog egg

video of early cleavage in a frog egg

gastrulation in a frog egg

neurulation in a frog egg

January 27

sea urchin gastrulation and cell movements

February 8

A pascal program that plots curvature
This was discussed in class, but not shown.

February 17

2-fold rotational symmetry

4-fold diagonal reflection symmetry

4-fold reflection symmetry

4-fold rotational symmetry

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