ZPA Cells of the Chick Embryo Produce Which Morphogen

question 10

Multiple Choice

ZPA cells of the chick embryo produce which morphogen?

• A)sonic hedgehog
• B)sonic chicken
• C)bicoid
• D)chicken wing factor

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Definitions:

Shock Absorber

A mechanical device designed to smooth out or dampen shock impulse, and absorb kinetic energy.

Dizygotic Twins

Twins that arise from the separate fertilization of two eggs; commonly known as fraternal twins. Compare with monozygotic twins.

Fraternal Twins

Twins that develop from two different eggs fertilized by two different sperm, resulting in siblings that are genetically distinct.

Extraembryonic Membrane

Membranes forming outside the embryo that support its development, including the yolk sac, amnion, chorion, and allantois in vertebrates.