Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Homeostasis: The ability or tendency of an organism or cell to maintain internal equilibrium by adjusting its physiological processes. The tendency of an organism or cell to regulate its internal conditions, such as the chemical composition of its body fluids, so as to maintain health and functioning, regardless of outside conditions. The organism or cell maintains homeostasis by monitoring its internal conditions and responding appropriately when these conditions deviate from their optimal state. The maintenance of a steady body temperature in warm-blooded animals is an example of homeostasis. In human beings, the homeostatic regulation of body temperature involves such mechanisms as sweating when the internal temperature becomes excessive and shivering to produce heat, as well as the generation of heat through metabolic processes when the internal temperature falls too low. The Hardy-Weinberg Equation To estimate the frequency of alleles in a population, we can use the HardyWeinberg equation. According to this equation: p = the frequency of the dominant allele (represented here by A) q = the frequency of the recessive allele (represented here by a) For a population in genetic equilibrium: p + q = 1.0 (The sum of the frequencies of both alleles is 100%.) (p + q)2 = 1 so p2 + 2pq + q2 = 1 The three terms of this binomial expansion indicate the frequencies of the three genotypes: p2 = frequency of AA (homozygous dominant) 2pq = frequency of Aa (heterozygous) q2 = frequency of aa (homozygous recessive) Ecology Link: http://www.rpi.edu/dept/chem-eng/Biotech-Environ/ECOLOGY/project.html Biomes Link http://www.worldbiomes.com/ http://sustainablescale.org/ConceptualFramework/UnderstandingScale/Meas uringScale/CarryingCapacity.aspx