Phase Fixation

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Phase Fixation

a type of phylogenetic change in the organs of animals in which one of the phases in the functioning of an animal’s organ becomes the only phase in the animal’s descendants. Phase fixation leads to the morphological change of the organ.

An example of phase fixation is the change from plantigrade locomotion to digitigrade locomotion in mammals. In plantigrades, such as bears, support on the digits is the final phase of support during walking and the only phase of support during running. Digitigrades, such as dogs and cats, are supported by the digits alone in both walking and running. As a result, the supporting surface of the extremities was diminished and each extremity gained an extra lever. Both factors promoted an increase in the velocity of locomotion of the animals.

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No references found			Cirilo Galang, Paul Johenning and John Maksem, ODL introduced the trans-rectal FNA biopsy of the prostate utilizing liquid phase fixation. Predictive Biosciences Announces Acquisition of OncoDiagnostic ... by Business Wire			phase coherence phase comparator phase conductor phase conjugate system phase constant Phase Contrast phase control phase converter phase correction Phase Correction Unit, Telegraph phase crossover phase delay phase detector phase deviation phase diagram Phase Difference phase discriminator phase distortion Phase Encoded phase encoding phase equalizer phase equilibria Phase Equilibrium phase excursion phase factor Phase Fixation phase front phase function phase generator phase inequality phase integral phase integral method phase inversion Phase Inverter phase jitter phase lag phase lead phase localizer phase lock phase magnet phase margin phase matching phase meter phase modifier Phase Modulation phase modulator Phase of the Moon Phase Plane Analysis phase plate phase portrait phase problem			Phase Dithering Sequence Phase Diversity Phase Division Multiple Access Phase Doppler Analysis Phase Doppler Anemometry Phase Doppler Interferometry Phase Doppler Particle Analyzer Phase Doppler Velocimeter Phase Elapsed Time Phase Emission Tomography Phase Encoded Phase encoding Phase encoding Phase encoding Phase encoding Phase encoding phase equalizer Phase equilibria Phase equilibrium Phase Equilibrium Diagram Phase Error Detector Phase Estimator phase excursion Phase factor Phase Failure Relay phase feeding phase feeding phase feeding phase feeding Phase fired controllers Phase Fixation Phase Frequency Detector Phase Frequency Discriminator phase front phase function phase generator Phase Gradient Autofocus Phase History Data phase I phase I phase I block phase I clinical trial phase I clinical trial phase I clinical trial phase I detoxification Phase I Environmental Site Assessment Phase I Environmental Site Assessment Phase I Environmental Site Assessment (ESA) Phase I ESA Phase I metabolism Phase I reaction Phase I Report Phase I trial Phase I trial Phase I trial Phase I trials Phase I trials Phase I trials phase II phase II phase II block

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