what is the difference between endonucleases and exonucleases?

Exonucleases remove nucleotides fron the end of DNA whereas Endonucleases cuts at specific positions within the DNA.

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endonucleases cut the dna at some middle part  of a dna helix but exonucleases cut the dna helix at ends.

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hmmmmmm.good kartik

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Example of exonucleus???
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Exonucleases are enzymes that work by cleaving nucleotides one at a time from the end (exo) of a polynucleotide chain. ... Its close relative is the endonuclease, which cleaves phosphodiester bonds in the middle (endo) of a polynucleotide chain.
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