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Dna holiday junction Illustration and Icon
Dna holiday junction
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A stylized schematic of a Holliday junction (HJ), a four-way DNA (deoxyribonucleic acid) crossover intermediate in homologous recombination. Four antiparallel double-stranded arms meet at a branch point, with complementary base pairing indicated by colored nucleotides. This nucleic-acid molecular structure functions in DNA repair and meiotic recombination, enabling strand exchange and branch migration. In biological hierarchy, it represents a nucleic acid motif within chromosomal DNA inside the cell nucleus of eukaryotes or nucleoid of prokaryotes. Relevant disciplines include molecular genetics and biochemistry.
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