Formation of the Endoderm and Mesoderm During Gastrulation in Frogs

question 170

Multiple Choice

Formation of the endoderm and mesoderm during gastrulation in frogs results from

• A) involution.
• B) migration of cells that have broken free within the blastocoel.
• C) formation of columnar cells at the vegetal pole.
• D) invagination.
• E) migration of secondary mesenchyme cells.

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Definitions:

Average Weight

The sum of the weights of all individuals in a group divided by the number of individuals in that group.

Canadians

Residents or citizens of Canada, a country located in the northern part of North America.

Null Hypothesis

The assumption that no meaningful variation exists between defined groups, attributing any detected differences to random sampling or mistakes in the experiment.

Alternative Hypothesis

In statistical testing, a hypothesis that directly contradicts the null hypothesis, proposing that there is a significant difference or effect.