Cellular DNA and epigenetics. Illustration of the packaging of deoxyribonucleic acid (DNA) and associated epigenetic factors. DNA (helical,across bottom) winds tightly into coils that wrap around proteins called histones (upper right). Further coiling forms strands of chromatin (centre right),which condenses during cell division to form structures called chromosomes (X-shaped,shown in the cell nucleus at centre left). Epigenetic factors are those that affect how genes are processed and used by cells (transcription). The example shown here is the action of methyl groups (green molecules). Methylation of histones affects transcription of genes | |
Lizenzart: | Lizenzpflichtig |
Credit: | Science Photo Library / Elam, Gunilla |
Bildgröße: | 4926 px × 3547 px |
Modell-Rechte: | nicht erforderlich |
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