The Organisms That Make Up the Sister Group of All

question 38

Short Answer

The organisms that make up the sister group of all bilaterally symmetrical animals (protostomes and deuterostomes) are the _______.

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Definitions:

Necessary Condition

A prerequisite necessity for the truth or occurrence of an event or statement.

Effect

A change that is a result or consequence of an action or other cause.

Triggering Event

An occurrence that sets off a specific reaction or series of events, often used in psychological or sociological contexts.

Developmental Domains

Areas of growth and development in children and adolescents, including physical, cognitive, emotional, and social development.