The great white shark is notable for its size, with mature female individuals growing up to 6.1 m (20 ft) in length and 1,950 kg (4,300 lb) in weight. However most are smaller, males measuring 3.35 to 3.96 m (11 ft 0 in to 13 ft 0 in) and females 4.57 to 4.88 m (15 ft 0 in to 16 ft 0 in) on average.
For most ALS genes, only one mutated copy is needed to cause disease. This is called a âdominantâ gene. For other genes, both copies must be mutated to cause disease. This is called a ârecessiveâ gene. During formation of eggs and sperm, gene pairs split up, so that an egg (or sperm) contains only one gene copy.
Aug. 22, 2011 -- Researchers from Northwestern University are reporting a major breakthrough in understanding of the cause of amyotrophic lateral sclerosis (ALS), the fatal disease also known as Lou Gehrigâs disease.nly about one in 10 ALS patients have the inherited form of the disease. Because no cause had been identified in people without a family history, researchers have not been certain that different forms of ALS were actually the same disease.