Variant or obsolete spelling of clone; an identical genetic copy of an organism.
Shortened or variant form of 'clone,' from Greek 'klon' (twig or branch), reflecting the biological sense of producing an organism identical to the parent.
Finding 'clon' in texts shows how modern scientific terminology was still settling in—scientists initially had various spellings before 'clone' became standardized in the 1950s-60s.
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