BIOLOGY:DYNAMIC SCIENCE-ACCESS >CUSTOM<
BIOLOGY:DYNAMIC SCIENCE-ACCESS >CUSTOM<
4th Edition
ISBN: 9781337254175
Author: Russell
Publisher: CENGAGE C
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Chapter 50, Problem 9TYK

In the embryonic development of the eye:

a. the optic vesicle cells permanently adhere to each other to prevent movement, whereas the optic cup cells are very motile.

b. the optic cup induces the surface ectoderm to form the lens placode.

c. gradients determine that the ectoderm overlying the lens vesicle develops into the optic vesicle.

d. microtubules powered by myosins and microfilaments powered by dyneins move the eye components around in the head region.

e. cadherins function in the presence of calcium to allow the lens placode and optic cup to break apart.

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