I the case of the earliest civs we don't have complete records of what they wrote or thought, rather some spotty ones based upon what archeologists have stumbled upon. And quite often those archeologists have retrofitted their own bias and suppositions to those limited finds.
There may be no "hint" of the "two chromosomes fusing" but there are hints of some knowledge of DNA.
In the "Epic of Gilgamesh" Gilgamesh makes several references to himself being two-thirds divine because his mother was a "Goddess"(Annunaki) and his father a human. For some time this confused historians because it would seem it should have been half and half, half from mother(egg), and another half from father(sperm). And this of course being after the initial basics of DNA were known and that one strand each comes from a parent. Only in recent decades has more become know about mitochondrial DNA(mtDNA) which is passed on by mother to child, and only on down through generations via the female line of descendants.
Hence the source perhaps of Gilgamesh's claim. Regular strand of DNA in mom's egg along with the assorted mtDNA within the egg cell nucleus, for two thirds, and the regular strand from dad's sperm tow form the double helix in a zygote. Gilgamesh likely didn't have access to a microscope nor as scientific detailed knowledge as is available today, but sounds like he was taught and grasped enough of the basic to have a "hint" about DNA.
Images from the ear tend to also support a possible "hint" about DNA:
And, the Wiki;
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The
caduceus (☤;
/kəˈdjuːʃəs, -siəs/;
Latin:
cādūceus, from
Greek: κηρύκειον
kērū́keion "herald's wand, or staff")
Caduceus - Wikipedia is the staff carried by Hermes in Greek mythology and consequently by Hermes Trismegistus in Greco-Egyptian mythology. The same staff was also borne by heralds in general, for example by Iris, the messenger of Hera. It is a short staff entwined by two serpents, sometimes surmounted by wings. In Roman iconography, it was often depicted being carried in the left hand of Mercury, the messenger of the gods.
Some accounts suggest that the oldest known imagery of the caduceus has its roots in Mesopotamia with the Sumerian god Ningishzida; whose symbol, a staff with two snakes intertwined around it, dates back to 4000 BC to 3000 BC.[3]
As a symbolic object, it represents Hermes (or the Roman Mercury), and by extension trades, occupations, or undertakings associated with the god. In later Antiquity, the caduceus provided the basis for the astrological symbol representing the planet Mercury. Thus, through its use in astrology, alchemy, and astronomy it has come to denote the planet and elemental metal of the same name. It is said the wand would wake the sleeping and send the awake to sleep. If applied to the dying, their death was gentle; if applied to the dead, they returned to life.[4]
By extension of its association with Mercury and Hermes, the caduceus is also a recognized symbol of commerce and negotiation, two realms in which balanced exchange and reciprocity are recognized as ideals.[5][6][7] This association is ancient, and consistent from the Classical period to modern times.[8][9] The caduceus is also used as a symbol representing printing, again by extension of the attributes of Mercury (in this case associated with writing and eloquence).
Although the Rod of Asclepius is the traditional and more widely used symbol of medicine, which has only one snake and is never depicted with wings, the Caduceus is sometimes used by healthcare organizations. Given that the caduceus is primarily a symbol of commerce and other non-medical symbology, many health-care professionals disapprove of this usage.[10]
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en.wikipedia.org
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Also as mentioned earlier, in Genesis, when the "sons of the Gods" mate with the "daughters of man" and sire offspring, this would "hint" that both parties have the fused second chromosome.
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So "hints' are there, but actual statements/claims hard to find, largely because the words/terms for such were in the vocabulary of the times.