- 업종: Education
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Founded in 1946, Palomar College is a public two-year community college in the city of San Marcos, located in north San Diego County, California. Palomar offers over 300 associate degree, certificate programs and is designated by the U.S. Department of Education as an Hispanic-Serving Institution ...
A skin surface that is unusually sensitive to pressure, temperature, and pain because there are high concentrations of nerve endings immediately below these areas.
Industry:Anthropology
A constriction in a chromosome where two or more chromatids come together.
Industry:Anthropology
A dramatic reduction in genetic diversity of a population or species resulting from an ecological crisis that wipes out most of its members. The limited genetic diversity of the few survivors is the pool from which all future generations are based. This is one of the small population size effects.
Industry:Anthropology
A group of genetically inherited forms of anemia caused by the production of fragile hemoglobin molecules that are easily destroyed. Thalassemia is most common around the Mediterranean Basin and in Southeast Asia. As in the case of sickle-cell trait, and glucose-6-phosphate dehydrogenase deficiency, it may provide some immunity to malaria.
Industry:Anthropology
A mechanical error that can occur during meiosis and mitosis. Specifically, members of a pair of homologous chromosomes move to the same pole rather than opposite poles. In meiosis, this can result in one gamete receiving two of the same type of chromosome and another receiving none of this type. Nondisjunction is a cause of gross chromosomal abnormalities.
Industry:Anthropology
A medical condition characterized by fatigue, weakness, poor appetite, weight loss, and paleness or a yellowish tinge to the skin and eyes resulting from a deficiency of red blood cells or insufficient amounts of hemoglobin molecules within the red cells. The result in both cases is a significantly reduced ability to get oxygen to the cells of the body. There are many different genetic and environmental causes of anemia.
Industry:Anthropology
A biological trait that has not changed over time from the ancestral form and/or function that was present in the species from which it came. See cladistics.
Industry:Anthropology
A radiometric dating method based on the fact that when trace amounts of uranium-238 fission there is a release of highly energy-charged alpha particles which burn narrow fission tracks, or damage trails, through glassy materials such as obsidian (i.e., volcanic glass), mica, and zircon crystals. The number of fission tracks is directly proportional to the time since the material cooled from a molten state. The rate at which fission tracks occur is related to the half-life of uranium-238, which is approximately 4. 5 billion years.
Industry:Anthropology
A group of dating techniques based on measurement of the radioactivity of short-lived daughter isotopes of uranium.
Industry:Anthropology
Unusually low core body temperature resulting from prolonged exposure to a cold environment. This can be a life threatening condition. See hyperthermia.
Industry:Anthropology
