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Brave Hearts Is a Small Group of Eight Members, All

question 25

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Brave Hearts is a small group of eight members, all of whom are retired army officials with injuries. Since its inception, all the members have remembered to retain their memberships without fail. The members help each other financially and give guidance about various life issues. In addition, the members also find joy in talking about their group to others. Which factor is illustrated by the behavior of the group members?


Definitions:

Morphogen

Substance that regulates development; secreted by one cell type and affects other cells in a concentration-dependent manner.

Concentration-dependent

A term used to describe processes or reactions that vary according to the concentration of a particular substance involved.

Development

Process by which the first cell of a multicelled organism gives rise to an adult.

Gastrulation

Animal developmental process by which cell movements produce a three-layered gastrula.

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