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The Umpire Who Insists He "Calls 'Em as He Sees

question 25

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The umpire who insists he "calls 'em as he sees 'em" is taking a:


Definitions:

Mesoderm

The primary germ layer that gives rise to connective tissue and some epithelial tissue.

Endoderm

The primary germ layer that gives rise to epithelial tissues only.

Morula

A zygote that has undergone cleavage and results in a ball of cells.

Blastocyst

A morula that travels down the uterine tube to the uterus and is invaded with fluid. It then implants into the wall of the uterus.

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