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Megalodon teeth have been excavated and used since ancient times. They were a valued artifact amongst pre-Columbian cultures in the Americas for their large sizes and serrated blades, from which they were modified into projectile points, knives, jewelry, and funeral accessories.
Color blindness or color vision deficiency (CVD) is the decreased ability to see color or differences in color. [2] The severity of color blindness ranges from mostly unnoticeable to full absence of color perception.
White-tailed deer can run faster than their predators and have been recorded sprinting at speeds of 60 km (40 mi) per hour and sustaining speeds of 50 km (30 mi) per hour over distances of 5–6 km (3–4 mi); [55] this ranks them amongst the fastest of all deer, alongside the Eurasian roe deer. They can also jump 3 m (9 ft) high and up to 9 m ...
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If the direction of derivative is not repeated, it is called a mixed partial derivative. If all mixed second order partial derivatives are continuous at a point (or on a set), f is termed a C 2 function at that point (or on that set); in this case, the partial derivatives can be exchanged by Clairaut's theorem:
XX male syndrome, also known as de la Chapelle syndrome, is a rare condition in which an individual with a 46,XX karyotype develops a male phenotype. [2] Synonyms for XX male syndrome include 46,XX testicular difference of sex development (or 46,XX DSD) [3] [4] [5] [6]
The following is a partial list of genes on human chromosome 21. ... The presence of this extra copy is also referred to as Trisomy 21. ... 50 21: q 22.13: 2610: 2703 ...
A Cochrane review found little to no difference in visual acuity as a function of the size of incisions made for phacoemulsification in the range from ≤ 1.5 mm to 3.0 mm. [57] Extracapsular cataract extraction (ECCE) consists of removing the lens manually, but leaving the majority of the capsule intact. [58]