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The ____ growth trend means “center-out.”

Low folic acid during pregnancy can result in _____.

The ____ growth trend means “head-down.”

Each stage of Freud’s psychosexual theory of development is characterized by a conflict associated with different parts of the body. According to Freud, how people experience and resolve each conflict influences personality _____.

The germinal period ends approximately _____ after conception.

The _____ is the person’s appearance, behavior, and brain and body functions.

Between _________ weeks , sex organs develop and are soon visible via ultrasound.

Within Erikson’s theory of psychosocial development, each of the developmental stages is characterized by a particular challenge, or a _____.

Almost every trait is _____, which means it is affected by many genes.

Regarding exposure to teratogens, which of the following affect when a threshold is crossed?