Genogram Maker
Genogram symbols

Twins Symbol in a Genogram

Twins are drawn with their child lines starting from the same point on the sibling line, so the lines converge like an upside-down V. Identical twins also get a short horizontal bar between the two lines; fraternal twins don’t.

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Fig. 1 — Twins exampleOpen in Genogram Maker
  • Twins
  • Identical twins

What it means

  • Same point on the sibling line = born together.
  • Bar between the lines = identical (monozygotic).

Compared with similar symbols

Fraternal twinsConverging lines, no bar.
Identical twinsConverging lines with a bar between them.

When to use it

  • Any twins, triplets or other multiple births.

Common mistakes

  • Drawing twins as ordinary siblings with separate lines.
  • Adding the bar for fraternal twins.

Genogram Maker draws this symbol for you and adds it to the key automatically. Open the example above and edit it.