At Which Developmental Stage Should One Be Able to First

question 9

Multiple Choice

At which developmental stage should one be able to first distinguish a protostome embryo from a deuterostome embryo?

• A) fertilization
• B) cleavage
• C) gastrulation
• D) coelom formation
• E) metamorphosis

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Definitions:

Frequency Polygon

Variation of a histogram where rather than a series of vertical bars, a line is drawn to connect the midpoint for each of the different measured variables in the distribution.

Central Tendency

A statistical measure that indicates the center or the middle of the distribution.

Extreme Outliers

Data points that are significantly distant from the majority of other points in a dataset, often indicating a deviation from expected norms.

Median

A measure of central tendency that is defined as the middle score or the score that divides a distribution exactly in half.