alleryIn a pedigree, a horizontal line connecting two individuals represents:
ASibling relationship
BRandom
CGenetic similarity
DMarriage (mating); vertical line below leads to offspring
Answer & Solution
Correct answer: D. Marriage (mating); vertical line below leads to offspring
**Pedigree symbols:** ○ female, □ male.
Horizontal line connecting = mating.
Vertical line below = offspring.
Filled = affected, blank = unaffected. Half-filled = carrier.
Pedigrees trace inheritance patterns across generations.
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