ARDMS Exam Review Questions: Quiz 294 January 13, 2016 By Aamir Khan Leave a Comment Δ The most frequently encountered chromosomal abnormality associated with holoprosencephaly is: a. Triploidy b. Trisomy 21 c. Trisomy 18 d. Trisomy 13 For More questions please join Our facebook group: https://www.facebook.com/groups/249298882082586/?ref=br_rs
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