In a pedigree analysis, what does a horizontal line connecting a circle and a square represent?
Answer and explanation
Correct answer: A. A mating or marriage between a biological female (circle) and a biological male (square)
- Step 1: In standard pedigree symbology: circle = female, square = male. Step 2. A horizontal line directly between a male and female indicates mating. Vertical lines extending downwards lead to their offspring. Answer: A mating or marriage between a biological female (circle) and a biological male (square). Why not the others: Siblings are connected by a horizontal sibship line branching from parents.
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