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Qu'est-ce (qui) est transition cells - définition

TERM IN GENETICS

Transition (Genetics); Transition mutation; Nucleotide transition; Base transition

Epidemiological transition

TERM IN DEMOGRAPHY AND MEDICAL GEOGRAPHY OF DEVELOPING COUNTRIES IN PARTICULAR, RELATING TO AN OLDER POPULATION

Epidemiologic Transition; Epidemiological Transition; Epidemiologic transition

In demography and medical geography, epidemiological transition is a theory which "describes changing population patterns in terms of fertility, life expectancy, mortality, and leading causes of death." For example, a phase of development marked by a sudden increase in population growth rates brought by improved food security and innovations in public health and medicine, can be followed by a re-leveling of population growth due to subsequent declines in fertility rates.

https://en.wikipedia.org/wiki/Epidemiological_transition

transition metal

SERIES OF CHEMICAL ELEMENTS

Transition element; Transition metals; Transition elements; Transition Metals; Transition Metal; Transition Element; Metal Oxidation States; Metal oxidation states; First-row transition metal; Transitional metal; First transition series; Transitional metals; Transition metal catalyst; D-block element; Transition-metal catalyst; Transition-metal

(also transition element)

¦ noun Chemistry any of the set of metallic elements occupying a central block in the periodic table, e.g. iron, manganese, chromium, and copper.

Kosterlitz–Thouless transition

PHASE TRANSITION IN THE TWO-DIMENSIONAL (2-D) XY MODEL

Berezinsky-Kosterlitz-Thouless transition; Kosterlitz-Thouless transition; Kosterlitz-Thouless; Berezinsky–Kosterlitz–Thouless transition; BKT transition; KT transition; Berezinskii-Kosterlitz-Thouless transition; Kosterlitz–Thouless transition

The Berezinskii–Kosterlitz–Thouless transition (BKT transition) is a phase transition of the two-dimensional (2-D) XY model in statistical physics. It is a transition from bound vortex-antivortex pairs at low temperatures to unpaired vortices and anti-vortices at some critical temperature.

https://en.wikipedia.org/wiki/Kosterlitz–Thouless_transition

Wikipédia

Transition (genetics)

Transition, in genetics and molecular biology, refers to a point mutation that changes a purine nucleotide to another purine (A ↔ G), or a pyrimidine nucleotide to another pyrimidine (C ↔ T). Approximately two out of three single nucleotide polymorphisms (SNPs) are transitions.

Transitions can be caused by oxidative deamination and tautomerization. Although there are twice as many possible transversions, transitions appear more often in genomes, possibly due to the molecular mechanisms that generate them.

5-Methylcytosine is more prone to transition than unmethylated cytosine, due to spontaneous deamination. This mechanism is important because it dictates the rarity of CpG islands.

https://en.wikipedia.org/wiki/Transition (genetics)