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Adoption in Genograms

Adoption is one of the most common non-biological family structures represented in genograms. The key visual marker is a dashed blue line connecting adoptive parent to child, in contrast to the solid line used for biological descent.

Last updated March 2026

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How Adoption is Shown

In the McGoldrick and Gerson system, every parent-child connection descends from the couple's family bar to the child symbol below. The line style encodes the relationship type:

Biological - a solid line in the default foreground color. Represents a genetic connection.
Adoptive - a dashed blue line. The blue color reinforces that the connection is legal and permanent rather than biological.
Foster - a dotted green line. The shorter dot pattern and green color indicate a temporary caregiving arrangement.
Other / Unknown - a dotted gray line. Used when the exact nature of the relationship is unclear or does not fit the other categories.

The blue color signals "non-biological but formal," while the dashed pattern distinguishes adoption from foster care (dotted) and biological descent (solid).

Common Adoption Scenarios

Open Adoption ExampleView Only|

Made with Genogram Pro

Open adoption: birth mother Diana is connected to Lucas with a spiritual connection line. Adoptive parents Eric and Sarah are connected to Lucas with dashed blue adoptive lines.

Closed Adoption

In a closed adoption, biological parent identity is unknown or omitted. Only the adoptive parents appear, connected to the child with a dashed blue line. No biological parent-child line is drawn.

The blank space where biological parents would go is not merely a notation detail; it mirrors a real experience. The adopted person has no medical history to offer a doctor, no answer when someone says "you look just like your mom," and no family tree for a school project that feels honest. Even when the adoptive family is loving and stable, that missing information carries its own weight and can become a genuine source of grief.

Open Adoption

In an open adoption, both biological and adoptive parents appear on the genogram. Biological parents connect to the child with a solid line; adoptive parents connect with a dashed blue line. This dual representation makes the genetic and legal relationships immediately clear.

The genogram makes a real tension visible: the child belongs to two families, and the loyalties that come with each can pull in opposite directions. Calling her birth mother on Mother's Day can feel like a betrayal of her adoptive mother, and spending holidays with one set of parents means not spending them with the other. That ongoing push-pull is the defining challenge of open adoption, and the two sets of lines on the genogram put it plainly on the page.

Step-Parent Adoption

When a step-parent legally adopts a child, a dashed blue line is drawn from the step-parent to the child. The biological parent retains their solid line. The other biological parent (if shown) keeps their solid line, and the prior couple relationship (divorce, separation) uses standard notation.

International / Cross-Cultural Adoption

International adoptions use the same dashed blue line as any other adoption. Clinicians may annotate the genogram with country of origin and cultural background. In a cultural genogram, these details become part of the broader family picture.

Adoption is one of four parent-child line types (biological, adoptive, foster, other/unknown).

All Parent-Child Line Types

See It in Practice

Adoption appears frequently in blended family genograms, alongside divorce notation, remarriage lines, and step-parent connections.

Divorce & Remarriage Genogram Example

Frequently Asked Questions

How do you show adoption on a genogram?

Adoption is shown by connecting the adoptive parent(s) to the child with a dashed blue line instead of the standard solid line used for biological relationships. The dashed pattern immediately signals that the parent-child bond is adoptive rather than biological. The child symbol itself (square, circle, or diamond) remains unchanged.

What does a dashed line mean in a genogram?

In the context of parent-child relationships, a dashed blue line indicates an adoptive connection. The dashed pattern distinguishes it from a solid line (biological), a dotted green line (foster), and a dotted gray line (other or unknown). For couple relationships, dashed lines have different meanings depending on color and pattern, such as engagement or cohabitation.

How do you show both biological and adoptive parents?

In an open adoption scenario, the biological parents are connected to the child with a solid line (the standard biological parent-child line) and the adoptive parents are connected with a dashed blue line. This dual representation makes it clear which set of parents has a biological relationship and which has a legal adoptive relationship with the child.

What's the difference between adoption and foster lines?

Adoptive parent-child lines are dashed blue, indicating a permanent legal relationship. Foster parent-child lines are dotted green, reflecting a temporary or transitional caregiving arrangement. The color and dash pattern work together to convey both the nature and permanence of the relationship at a glance.

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