In Development of Animals, but Not in Development of Plants

question 28

Multiple Choice

In development of animals, but not in development of plants, ________.

• A) gene expression in developing embryonic tissues is closely regulated
• B) orientation of cells and tissues is critical for proper development
• C) differentiation of cells is directed and maintained by cascades of molecular signals
• D) once cells are differentiated, they cannot de-differentiate and re-differentiate

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Definitions:

Classes

Categories or groups into which data can be divided based on certain characteristics or attributes.

Relative Frequencies

The measures showing the number of times a certain event occurs in relation to the total number of events, often expressed as a percentage or fraction.

Sample Size

The number of observations or entities included in a sample, which represents a portion of the total population.

Cumulative Frequency

The running total of frequencies up to a certain point in a set of data.