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<\/p>\n<\/p>\n\nWelcome to today’s lesson on Epigenomics. Before we dive into the subject, it’s important to clarify some commonly confused words that often arise in this field.\n<\/p>\n
\nMethylation and acetylation are two fundamental processes in Epigenomics. While both involve adding a chemical group to DNA, they have distinct effects. Methylation typically leads to gene silencing, while acetylation often activates gene expression.\n<\/p>\n
\nEpigenetics and genetics are interconnected but differ in scope. Genetics focuses on the study of genes and heredity, while epigenetics explores how external factors can influence gene expression without altering the underlying DNA sequence.<\/p>\n
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\nHistone modification and DNA modification are two types of epigenetic changes. Histone modification involves altering the proteins around which DNA is wrapped, while DNA modification directly modifies the DNA sequence itself.\n<\/p>\n
\nThe genome refers to the complete set of genetic material in an organism, while the epigenome encompasses all the chemical modifications and proteins associated with DNA. Think of the genome as the ‘hardware’ and the epigenome as the ‘software’ that determines gene expression patterns.\n<\/p>\n
\nGenetic inheritance involves the passing of genes from one generation to the next. Epigenetic inheritance, on the other hand, refers to the transmission of epigenetic marks, which can influence gene expression, without altering the DNA sequence itself.<\/p>\n
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\nDemethylation is the removal of a methyl group from DNA, while remethylation is the addition of a methyl group. These processes play crucial roles in regulating gene expression and maintaining cellular identity.\n<\/p>\n
\nIn DNA, a CpG site refers to a cytosine followed by a guanine nucleotide. When multiple CpG sites are close together, it forms a CpG island. CpG islands are often associated with gene regulatory regions.\n<\/p>\n
\nTranscription is the process of synthesizing an RNA molecule using DNA as a template. Translation, on the other hand, involves converting the RNA molecule into a protein. Both processes are essential for gene expression.\n<\/p>\n
\nEpigenomic profiling refers to the comprehensive analysis of epigenetic marks across the entire genome. Epigenetic modification, on the other hand, refers to the specific changes that occur at individual gene loci.\n<\/p>\n
\nEpigenetic reprogramming occurs during early development when the epigenetic marks are largely erased, allowing cells to differentiate. Epigenetic maintenance, on the other hand, refers to the stable inheritance of epigenetic marks in differentiated cells.<\/p>\n","protected":false},"excerpt":{"rendered":"