This crossword clue is for the definition: Face.
it’s A 4 letters crossword puzzle definition.
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Possible Answers: MEET.
Last seen on: LA Times Crossword 1 Jun 2018, Friday
Random information on the term “Face”:
Diprosopus (Greek διπρόσωπος, “two-faced”, from δι-, di-, “two” and πρόσωπον, prósopon [neuter], “face”, “person”; with Latin ending), also known as craniofacial duplication (cranio- from Greek κρανίον, “skull”, the other parts Latin), is an extremely rare congenital disorder whereby parts (accessories) or all of the face are duplicated on the head.
Although classically considered conjoined twinning (which it resembles), this anomaly is not normally due to the fusion or incomplete separation of two embryos. It is the result of abnormal activity by the protein SHH (sonic hedgehog). (The name of this protein was inspired by the Sonic the Hedgehog video game character and is part of an idiosyncratic naming tradition in molecular biology research.)
SHH and its corresponding gene have been found to play an important role in signaling craniofacial patterning during embryonic development. Among other things, SHH governs the width of facial features. In excess it leads to widening of facial features and to duplication of facial structures. The greater the widening, the more structures are duplicated, often in a mirror image form. This has been demonstrated in the laboratory by introducing pellets of the SHH protein into chicken embryos, resulting in chickens with duplicate beaks. Inadequate amounts of that protein lead to opposite conditions such as cyclopia where facial features are insufficiently developed.