What Developmental Event Was Key to the Evolution of the Chordates,by

question 33

Multiple Choice

What developmental event was key to the evolution of the chordates,by forming the notochord and dorsal nerve cord?

• A)morphogenesis
• B)organogenesis
• C)gastrulation
• D)neural crest formation
• E)neurulation

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Definitions:

Random Variation

The unpredictability in the outcome of a process, experiment, or measurement due to chance.

Lower Control Limit

The lower control limit is the lowest value on a control chart below which process variability is considered to be out of control.

Sample Proportion

A statistic that estimates the fraction of items in a population that possess a certain attribute, based on data from a sample.

P Chart

A type of control chart used for monitoring the proportion of defective items in a process over time.