.... occurs by natural selection in which the condition arises from chromosomal nondisjunction during meiosis in this process, the 46 chromosomes in the cell separate, ulimatiing producing two new cells having 23 chromosomes each. Before meiosis is completed, however, chromosomes pair with their corresponding chromosomes and exchange bits of genetic material. In women, X-chromosomes pair, in men, the X and Y-chromosomes separate, and meiosis continues. Otherwise it is not something that happens by the law of nature in which you are randomly chosen in its specific frame of how many times it happens, whom it effects, and how it happens. There is really no spe .....

.... winds then form a vertical cylinder extending upward for several miles. Most originate within the doldrums and travel across the warm ocean waters while building up energy and strength. After they hit land they begin to lose speed and die off due to friction. In the Northern Hemisphere usually travel first in a northwestern direction and in the higher latitudes turn toward the northeast. In the Southern Hemisphere the usual path of a hurricane is first to the southwest and then turning toward the southeast. are characterized by strong winds and pouring rain. Thunderstorms and waterspouts appear in the storm's cloud system. All contain an eye. The e .....

.... feel perfectly healthy, but if you are infected, you can pass the virus to anyone you may have unprotected sex or share needles or syringes with. AIDS and HIV are two different viruses, but HIV well eventually turn into AIDS. About half the people with HIV develop AIDS within 10 years, but between infection with HIV, the onset for AIDS can vary greatly. The severity of the HIV related illness or illnesses will differ from person to person, according many factors but mostly to the overall health of the individual. The new advances in technology are helping postpone the advancement of the disease. Lets start at the beginning. First, lets learn what AIDS i .....

.... will make between $12,000 and $13,000 a year. After you are more experienced you could make between $18,000 to $24,000 a year. There are not any benefits that are definate. When you find a salon to work at, you discuss benefits with the person who hires you, but if you own your own salon, you have no benifits, but you can decide your own vacations. As a cosmetologist you usually would work a full work day. Most people work 44 hours a week, but some work 48 hours or more. There are many ways to get schooling to be a cosmetologist. You could go to either a public or private vocational school, which some high schools offer. You could also go to a beauty sc .....

.... feed in nearshore areas. The Farallan Islands, a national wildlife refuge about twenty-seven miles off San Francisco, is a common feeding ground for the great white. The coastal waters along central California, especially around the Ano Nuevo State Reserve and along the Marin Headlands, are another common area for white sharks. In the summer the sharks move to the coasts of Oregon and occasionally the Gulf of Alaska, and in the fall, they turn south and move along the offshore islands. They are also found in great numbers in the Australian waters. The great white is a very agile killer that hunts mostly anything in the ocean .....

.... RNA. The nucleus is surrounded by two membranes due to the need to be highly selective with materials that enter the cell's nucleus. The cell itself is surrounded by a membrane. In between the membrane of the nucleus and the cell membrane is cytoplasm. It is in the cytoplasm where all of the other organelles are stored. There are six main organelles in the cytoplasm. First, the mitochondria, which provides energy to the cell through ATP and respiration. Then there is the endoplasmic reticulum which separates parts of the cell. Then there is the Golgi apparatus which is used for sorting, storing, and secretion for the cell. Next are lysosomes, which h .....

.... Darwin, James Watson and Francis Crick. All three of these men were extremely intellectual, but their intellect only contributed partially to their success. Intellect and planning, combined with chance and luck contributed to their overall success. People take chances on a daily basis. If you actually stop and think about it, life is one big game of chance. It is by chance that we are born, that we continue to survive, and that we will eventually die. Some people feel that this cycle occurs do to the will of God, others, like Charles Darwin believe that it happens based on chance or natural selection. Whatever you believe or disbelieve, life cannot .....

.... canal, or the digestive tract. There is good reason why the passageway used by food to travel through the body is called the alimentary canal. Just as canals are constructed to guide ships through waterways to their destinations, the alimentary canal guides food as it travels through the human body. The whole canal is lined with a mucous membrane. Digestion begins in the mouth. Here the food is cut and chopped by the teeth. The tongue helps mix the food particles with a digestive juice called saliva, which is secreted in the mouth. Saliva moistens the food so it can be swallowed easily. It also changes some starches into simple sugars. It is important .....