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S S-9 mix s-electron saccade saccule salicylates salinity Salmonella salt sample sampling distribution sampling error Sanger sequencing Sanger's sequencing saprophyte sarcoma sarcomere satellite satellite chromosome satellite DNA Satellite RNA saturated solution saturation mutagenesis savanna scaffold scaffold attachment region Scaffold protein scale scanning hypothesis scavenger Schiff bases science scientific method scion scoria Scrapie screening technique SDS second division segregation second law of thermodynamics Second Messenger second-site mutation Secondary Consumer secondary oocyte secondary sexual character secondary spermatocyte secondary structure Secreted peptide factor sector sedimentation Segment polarity genes segmentation segregating population segregation segregation distortion segregation, rule of segregational load segregational petite seizure Selectable marker selection selection coefficient (s) selection differential selection progress selection-mutation equilibrium selective medium selective mutation selective neutrality selective sweep selective system self self-assembly self-complementary self-fertilization self-incompatibility self-pollination selfed selfish DNA semelparity semen semi- semicircular canals semiconductor semiconservative replication seminal fluid seminal vesicles semisterility (half sterility) senescence sense strand Sensory Organs sepal sept- septum Sequence assembly Sequence tagged site (STS) Sequencing Sequencing technology sequestrene Ser serine Serology serotonin serotype serum sessile Severe Acute Respiratory Syndrome sex sex chromosome sex determination sex linkage sex linked sex reversal sex switch sex- sex-controlled trait sex-determining region Y (SRY) sex-influenced trait sex-lethal sex-limited trait sex-linked trait sex-ratio phenotype sexduction Sexual reproduction sexual selection Shine-Delgarno hypothesis short interspersed element shotgun technique shuttle vector siblings (sibs) sickle-cell anemia siderophore sigma factor Signal Amplification signal hypothesis signal sequence signal transduction cascade signal transduction pathway silent mutation silent polymorphisms silique Silver Staining SINE single bond single nucleotide polymorphism (SNP) single-strand binding protein sinoatrial node sister chromatid sister-chromatid exchange Site-directed mutagenesis site-specific recombination skew small nuclear ribonucleoprotein small nuclear RNA smooth endoplasmic reticulum smooth ER SNP snRNA snRNP sociobiology sodium hydroxide solenoid structure soleus solute solution solvation solvent solvolysis soma somatic cell somatic cell fusion Somatic cell gene therapy somatic doubling somatic hypermutation somatic mutation somatic-cell genetics somatic-mutation theory somatoliberan somatosensory cortex somatostatin somite Sonic hedgehog pathway sonicate sorbent soret band SOS box SOS repair SOS response Southern blot space spacer DNA SPC SPE specialized (restricted) transduction speciation species species density specific gravity specific heat specific-locus test spectral karyotype spectroscopic spectroscopy sperm cell spermatid spermatocyte spermatogenesis spermatogonium spermiogenesis spider cell spindle spiral cleavage spirillum spirometry spliceosome splicing spontaneous mutation spore sporophyte src SSD stabilizing selection stable isotopes stacking staggered cuts stamen staminode standard standard deviation standard error of the mean standard free-energy change (DGo) standard reduction potential (DEo') standard temperature and pressure (STP) star activity start codon stasipatric speciation state stationary phase statistic statistical distribution Statistical Process Control (SPC) statolith steady state stellate ganglion stem cell stem-loop structure stereoblastula stereoisomers stereology steroid receptor Sterol-Sensing Domain (SSD) Sticky end stimulus stochastic stoichimetry Stokes' radius stomata stomodeum stop codon strain stringent factor Stringent plasmid stringent response strong acid strong base structural formula structural gene Structure-functionalism struvite sub- subatomic particle Subcloning sublimation submetacentric chromosome substance substantia nigra substrate subtelocentric chromosome Subunit vaccine subvital gene succinate-Q reductase complex sugar sugar-phosphate backbone sum rule super- supercoil supercoiling supercooling supergene superinfection Supernatant supersuppressor suppressive petite suppressor gene suppressor mutation supra- surface tension survival of the fittest suspension sutures Svedberg unit swivelase Symbiosis sympatric speciation symplast symplastic symptoms syn- synapse synapsis Synaptic Terminal synaptonemal complex syncitiotrophoblast Syncytial blastoderm syncytium syndrome syngamy Syngeneic synteny synteny test synthesis synthesize synthetic lethal screening synthetic medium SEARCH : Select Category: Glossary - 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