Geiger–Muller counter tube, 616 gel, 616 gel aging, 616 gel fraction, 617 gel point, 617 gel time, 617 gelation, 617 gelation temperature, 618 geminate ion pair, 618 geminate pair, 618geminate recombination, 618 gene amplification, 619 gene (cistron), 619 gene library, 619 gene manipulation, 620 general acid catalysis, 620 general acid–base catalysis, 620 general base catalysis, 620 general force field, 621 generalized transition-state theory, 621 generally labelled tracer, 621 generation time, in biotechnology, 621 genetic algorithm, 622 genetic code, 622 genome, 622 genomics, 622 genotype, 623 geometric attenuation, 623 geometric isomerism [obsolete] , 623 geometric (logarithmic) mean, , 623 geometrical equivalence in polymers , 624 geometry (counting) in radioanalytical chemistry , 624 geometry factor in radioanalytical chemistry , 624 germylenes [obsolete] , 624 germylidenes, 624