The pedigree below tracks an autosomal trait across three generations. Filled symbols indicate affected individuals; squares are males, circles are females.
The trait is most likely:
- A
Y-linked
- B
Autosomal dominant
- C
X-linked dominant
- Dcheck_circle
Autosomal recessive
Explanation
Two unaffected parents (gen II) produce an affected daughter; the trait skips a generation, consistent with autosomal recessive inheritance. Both sexes are affected, ruling out Y-linked.