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Female rats wiggle their ears when they are in heat, to excite male rats and encourage them to mate. [4] Ear wiggling was a shtick in Hal Roach comedies such as Laurel and Hardy and Our Gang. To achieve this effect, performers such as Stan Laurel would have their ears pulled by threads which would not be visible in the film. [5]
Nasodigitoacoustic syndrome, also called Keipert syndrome, is a rare congenital syndrome first described by J.A. Keipert and colleagues in 1973. The syndrome is characterized by a misshaped nose, broad thumbs and halluces (the big toes), brachydactyly, sensorineural hearing loss, facial features such as hypertelorism (unusually wide-set eyes), and developmental delay.
A more recent analysis of Teinolophos concluded that the trough was a channel for the large vibration and electrical sensory nerves terminating in the bill (a defining feature of the modern platypus). Thus, the trough is not evidence that Teinolophos had a pre-mammalian jaw joint and a pre-mammalian middle ear. [44]
The muscles connected to the ears of a human do not develop enough to have the same mobility allowed to monkeys. Arrows show the vestigial structure called Darwin's tubercle . In the context of human evolution , vestigiality involves those traits occurring in humans that have lost all or most of their original function through evolution .
The varying clinical expression of the disease between different families suggests that multiple loci may be involved. In 1992, using genetic linkage studies, the BOR gene was identified on chromosome 8, [10] Subsequently, another locus on human chromosome 14 was identified, and several mutations were reported in genes EYA1, SIX1, [11] and SIX5.
In an op-ed that waxes poetic about Demi Moore's sci-fi horror The Substance, actress and director Amber Tamblyn revealed that she underwent ear-pinning surgery at the age of 12 after booking her ...
The Vacanti mouse. The Vacanti mouse was a laboratory mouse (circa 1996) [1] that had what looked like a human ear grown on its back. The "ear" was actually an ear-shaped cartilage structure grown by seeding cow cartilage cells into biodegradable ear-shaped mold and then implanted under the skin of the mouse, with an external ear-shaped splint to maintain the desired shape.
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