Ali -PhD || PU 🇮🇳 on Instagram: "In molecular biology, CpG islands are DNA regions rich in cytosine guanine dinucleotides, often located near gene promoters. When these CpG sites become methylated, methyl groups are added to cytosine bases, leading to gene silencing by preventing transcription factors from binding or by recruiting proteins that compact chromatin. This epigenetic modification does not change the DNA sequence but can profoundly affect gene expression. By saying “my happiness got