to the passage below and then answer the question afterwards in the same language as the passage: Passage: PWS is caused by an epigenetic phenomenon known as imprinting, caused by the deletion of the paternal copies of the SNRPN and NDN necdin genes along with clusters of snoRNAs: SNORD64, SNORD107, SNORD108 and two copies of SNORD109, 29 copies of SNORD116 (HBII-85) and 48 copies of SNORD115 (HBII-52). Awọn wọnyi wa lori chromosome 15 ti o wa ni agbegbe 15q11-13. A le padanu agbegbe PWS/AS yii nipasẹ ọkan ninu awọn ilana jiini pupọ, eyiti o waye ni ọpọlọpọ awọn iṣẹlẹ nipasẹ iyipada aye. Awọn ilana miiran, ti ko wọpọ pẹlu awọn iṣẹlẹ uniparental disparomy, awọn iyipada chromosome sporadic, awọn iyipada chromosome, ati awọn idibajẹ jiini. Nitori titẹsi, awọn ẹda ti o jogun ti awọn jiini wọnyi jẹ ogbon ti o dakẹ, ati awọn ẹda baba nikan ni o jẹ aṣoju, awọn ẹda ti o jẹ baba nikan ni o jẹ aṣoju, awọn
ìṣẹ̀lẹ̀ tí a mọ̀ sí imprinting