# Index of genetics articles

Genetics (from Ancient Greek γενετικός genetikos, “genite” and that from γένεσις genesis, “origin”), a discipline of biology, is the science of heredity and variation in living organisms.
Articles (arranged alphabetically) related to genetics include:
* Top
* 0–9
* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* 3' end
* 5' end

## A

* Acentric chromosome
* Achondroplasia
* Active site
* Adam's Curse
* Adaptation
* Adenine
* Adenosine
* Adenovirus
* Adenosine diphosphate (ADP)
* Ala
* Alagille syndrome
* Albino
* Alcoholism
* Alkylating agent
* Allele
* Allele frequency
* Alleles
* Allopolyploid
* Allosteric protein
* Allozyme
* Alternative splicing
* Altruism
* Alu family
* Alzheimer's disease
* Amber codon
* Ames test
* Amino acid
* Amino acid sequence
* Amino acids
* Amniocentesis
* Amorph
* AMP
* Amphidiploid
* Amplification
* Anagenesis
* Anaphase
* Aneuploid
* Aneuploid cell
* Aneuploidy
* Angelman syndrome
* Angiosperm
* Animal model
* Annealing
* Annotation
* Antibody
* Anticipation
* Anticoding strand
* Anticodon
* Antigen
* Antimorph
* Antiparallel
* Antisense
* Antisense RNA
* Antisense strand
* Antisense therapy
* AP endonuclease
* AP site
* Apert syndrome
* Apoptosis
* Applied genetics
* Arg
* Arrayed library
* Ascospore
* Ascus
* Asexual spore
* Asn
* Asp
* Assembly
* Assortative mating
* Atavism
* ATP
* Attenuator
* Autogamy
* Autopolyploid
* Autoradiograph
* Autoradiography
* Autosomal dominant
* Autosome
* Autotroph
* Auxotroph
* Auxotrophic mutant
* Axoneme

## B

* B form DNA
* Bacillus
* Back mutation
* Backcross
* Bacteria
* Bacterial conjugation
* Bacterial lawn
* Bacteriophage
* Balbiani ring
* Barr body
* Basal body
* Base
* Base analogue
* Base pair
* Base pairs
* Base sequence
* Batesian mimicry
* Bayesian analysis
* Bead theory
* Behavioral genetics
* Behavioural genetics
* Beta-galactosidase
* Bimodal distribution
* Binary fission
* Binomial expansion
* Binomial theorem
* Biochemical genetics
* Bioinformatics
* Biolistic
* Bioremediation
* Biotechnology
* Biparental zygote
* Birth defect
* Bivalent (genetics)
* BLAST
* Blastoderm
* Blastomere
* Blastopore
* Blastula
* Blending inheritance
* Blunt-end ligation
* Bookmarking
* Brachydactyly
* Branch migration
* BRCA1
* BRCA2
* Breakage and reunion
* Bridging cross
* Bud
* Buoyant density
* Burkitt lymphoma

## C

* Cancer
* Candidate gene
* Capillary array
* Carcinogen
* Carcinoma
* Carrier
* Carrier testing
* Cat coat genetics
* cDNA
* cDNA library
* Cell
* Centimorgan
* Central dogma of molecular biology
* Centromere
* Chemical base
* Chimeraplasty
* Chromomere
* Chromosomal crossover
* Chromosomal deletion
* Chromosome
* Chromosome aglet
* Chromosome banding
* Chromosome painting
* Chromosome region p
* Chromosome region q
* Classical genetics
* Cleft lip
* Cleft palate
* Clinical geneticist
* Clone (genetics)
* Clone bank
* Cloned DNA
* Cloning
* Cloning vector
* Coccus
* Code
* Code dictionary
* Coding strand
* Codominance
* Codon
* Codon usage bias aka Codon preference
* Cohesive end
* Cointegrate
* Col plasmid
* Colicinogenic factor
* Colonoscopy
* Colony
* Common ancestry
* Comparative genomics
* Compartment
* Competence factor
* Competent
* Complementarity genes
* Complementary DNA
* Complementation
* Complementation test
* Complete linkage
* Complex trait
* Component of fitness
* Composite transposon
* Concordance
* Conditional mutation
* Confidence limits
* Confidentiality
* Congenital
* Conjugation tube
* Consanguineous
* Consanguinity
* Consensus sequence
* Conservative change
* Conserved sequence
* Constant region
* Constitutive gene
* Contig
* Contig map
* Contig maps
* Contiguous genes
* Continuous variation
* Controlling element
* Copper fist
* Copy-choice model
* Corepressor
* Cosegregation
* Cosmid
* Cosmids
* Cot value
* Cotransduction
* Cotransformation
* Coupling
* Covariance
* cpDNA
* CpG island
* Craniosynostosis
* Cri du chat
* cRNA
* Cross
* Cross-fertilization
* Crossbreed
* Crossover
* Crossover suppressor
* Crossovers
* Cryptic coloration
* Culture
* Cyclic AMP
* Cys
* Cystic fibrosis
* Cytidine
* Cytochrome
* Cytogenetic map
* Cytogenetics
* Cytohet
* Cytokinesis
* Cytological band
* Cytological map
* Cytoplasm
* Cytoplasmic trait
* Cytosine
* Cytosol

## D

* D-loop
* Darwinian fitness
* Data warehouse
* Dauermodification
* Deficiency
* Degenerate code
* Degenerate codon
* Degrees of freedom (physics and chemistry)
* Deletion
* Deletion chromosome
* Deletion map
* Deletion mapping
* Deme (biology)
* Dementia
* Denaturation
* Denaturation map
* Denominator element
* Deoxyribonuclease
* Deoxyribonucleotide
* Deoxyribose
* Depauperate fauna
* Derepressed
* Determinant
* Determination
* Deterministic
* Developmental biology
* Diabetes mellitus
* Diakinesis
* Dicentric bridge
* Dicentric chromosome
* Dictyotene
* Dideoxy method
* Differentiation
* Dihybrid
* Dihybrid cross
* Dimerization
* Dimorphism
* Dioecious plant
* Diploid
* Directed evolution
* Directed mutagenesis
* Directed sequencing
* Directionality (molecular biology)
* Discrete generations
* Disease
* Disruptive selection
* Distribution
* DMD
* DNA
* DNA bank
* DNA clone
* DNA cloning
* DNA fingerprint
* DNA glycosylase
* DNA gyrase
* DNA hybridization
* DNA ligase
* DNA marker
* DNA polymerase
* DNA probe
* DNA repair genes
* DNA replication
* DNA sequence
* DNA sequencing
* Docking protein
* Domain
* Dominance variance
* Dominant
* Dominant allele
* Dominant phenotype
* Dosage compensation
* Dose
* Dot blotting
* Double crossover (Bad Link)
* Double digest
* Double helix
* Double infection
* Double reduction
* Doublesex
* Down syndrome
* Downstream
* Draft sequence
* Duplicate gene
* Dwarfism
* Dyad
* Dyad symmetry
* Dystonia

## E

* E (exit site)
* Ecdysone
* Ecological genetics
* Ectopic expression
* Ectopic integration
* Electrophoresis
* Electroporation
* ELSI
* Endogenote
* Endomitosis
* Endonuclease
* Endopolyploidy
* Endosperm
* Enforced outbreeding
* Enhancer
* Enhancer trap
* Enriched medium
* Enucleate cell
* Enzyme
* Epigenetics
* Episome
* Epistasis
* Equational division
* Equivalence group
* Erythrocytes
* Escherichia coli
* Ethics
* Ethidium
* Euchromatin
* Eugenics
* Eukaryote
* Eukaryotic cell
* Euploid
* Euploidy
* European Journal of Human Genetics
* Evolution
* Evolutionary rate
* Excision repair
* Exconjugant
* Exogenote
* Exogenous DNA
* Exon
* Exon shuffling
* Exonuclease
* Expected progeny difference
* Experimental design
* Expressed gene
* Expression vector
* Expressivity (genetics)

## F

* F factor
* F plus cell
* F- cell
* F-duction
* F-pili
* F1 generation
* F2 generation
* Factorial
* Familial cancer
* Familial trait
* Family selection
* Fanconi anemia
* Fate map
* Fecundity selection
* Feedback inhibition
* Fibroblasts
* Filial generation
* Filter enrichment
* Fingerprint
* Fingerprinting
* FISH (Fluorescent in situ hybridization)
* Fitness (W)
* Fixed allele
* Fixed breakage point
* Flow cytometry
* Flow karyotyping
* Fluctuation test
* Fluorescent in situ hybridization
* FMET
* Focus map
* Footprinting
* Forensics
* Forward mutation
* Founder effect
* Fragile site
* Fragile X syndrome
* Frameshift
* Frameshift mutation
* Fraternal twin
* Frequency histogram
* Fruiting body
* Full gene sequence
* Functional allele
* Functional genomics
* Fundamental number

## G

* G-banding
* Galton Laboratory
* Gamete
* Gametophyte
* Gastrulation
* GC-rich area
* Gel electrophoresis
* Gene
* Gene chip technology
* Gene cloning
* Gene complex
* Gene conversion
* Gene dose
* Gene duplication
* Gene expression
* Gene family
* Gene flow
* Gene frequency
* Gene fusion
* Gene interaction
* Gene library
* Gene locus
* Gene map
* Gene mapping
* Gene markers
* Gene mutation
* Gene orders
* Gene pair
* Gene pool
* Gene prediction
* Gene product
* Gene regulatory network
* Gene testing
* Gene theft
* Gene therapy
* Gene transfer
* Genetic algorithm
* Genetic architecture
* Genetic carrier
* Genetic code
* Genetic counseling
* Genetic deletion
* Genetic determinism
* Genetic disorder
* Genetic dissection
* Genetic diversity
* Genetic drift
* Genetic engineering
* Genetic genealogy
* Genetic history of Europe
* Genetic illness
* Genetic informatics
* Genetic linkage map
* Genetic load
* Genetic map
* Genetic marker
* Genetic material
* Genetic mosaic
* Genetic polymorphism
* Genetic screen
* Genetic screening
* Genetic testing
* Genetic variance
* Genetic variation
* Geneticist
* Genetics
* Genetics and archaeogenetics of South Asia
* Genetics experiments
* Genic balance theory
* Genome
* Genome map
* Genome project
* Genome screen
* Genomic library
* Genomic sequence
* Genomics
* Genophore
* Genotype
* Germ cell
* Germ line
* Germ-line theory
* Germinal mutation
* Germline mutation
* Giemsa stain
* Gln
* Glutamic acid
* Gly
* God gene
* Gradient
* Gray crescent
* gRNA
* Ground state
* Group 1 intron
* Group II intron
* Group selection
* Guanine
* Guanosine
* Guide RNA
* Gynandromorph

## H

* H-Y antigen
* Haemoglobin (hb)
* Haemophilia
* Haplodiploidy
* Haploid
* Haploidization
* Haploinsufficiency
* Haplotype
* Hardy–Weinberg law
* Harlequin chromosome
* HAT medium
* Hayflick limit
* Heat-shock protein
* Helicase
* Hemizygous
* Hemizygous gene
* Hemophilia
* Hereditary cancer
* Hereditary mutation
* Heredity
* Heritability
* Hermaphrodite
* Heterochromatin
* Heteroduplex
* Heteroduplex DNA
* Heteroduplex mapping
* Heterogametic sex
* Heterogamy
* Genetic heterogeneity
* Heterokaryon
* Heterokaryon test
* Heteroplasmon
* Heteroplasmy
* Heterothallic
* Heterothallic fungus
* Heterotroph
* Heterozygosity
* Heterozygote
* Heterozygous
* Heterozygous DNA
* Hexaploid
* Hfr cell
* Human Genome Project
* HHMI
* His
* Histone
* HnRNA
* Hogness box
* Holandric trait
* Holoenzyme
* Holoprosencephaly
* Homeo-box
* Homeo-domain
* Homeobox
* Homeosis
* Homogametic sex
* Homolog
* Homologue
* Homology
* Homoplasmy
* Homothallic
* Homothallic fungus
* Homozygote
* Homozygous
* Homozygous gene pair
* Hormone
* Host range
* Hot spot
* Housekeeping genes
* HUGO
* Human gene therapy
* Human genetics
* Human genome
* Human Genome Project
* Huntington's disease
* Hybrid (biology)
* Hybrid DNA
* Hybrid dysgenesis
* Hybrid plasmid
* Hybrid zone
* Hybridoma
* Hydrogen bond
* Hydroxyapatite
* Hypermorph
* Hyperploid
* Hypervariable locus
* Hypervariable region
* Hypomorph
* Hypoploid
* Hypostatic gene

## I

* Ichthyosis
* Identical twin
* Identity by descent
* Identity by type
* Idiogram
* Idiotypic variation
* Idling reaction
* Ile
* Imago
* Immune system
* immunity
* Immunoglobulin (Ig)
* Immunoglobulin gene
* Immunohistochemistry
* Immunotherapy
* Imprinting
* Indigenous Amerindian genetics
* In situ
* Introduction to genetics
* In vitro
* In vitro mutagenesis
* In vivo
* Inbreeding
* Incestuous
* Inclusive fitness
* Incomplete dominance
* Inducer
* Inducible operon
* Induction
* Industrial melanism
* Infectious transfer
* Informed consent
* Inherit
* Inherited
* Initiation codon
* Initiation
* Initiation
* Initiator protein
* Inosine
* Insertion
* Insertional mutation
* Inside marker
* Intercalating agent
* Interference
* Interkinesis
* Interphase
* Interrupted mating
* Intersex
* Interstitial region
* Intron
* Introns
* Inversion
* Iojap
* Ionizing radiation
* IR
* IS
* IS element
* Isoaccepting tRNA
* Isochromosome
* Isoenzyme
* Isoschizomer
* Isotope
* Isozyme

## J

* Junk DNA

## K

* Kappa particle
* Kartagener's syndrome
* Karyokinesis
* Karyotype
* Kilobase
* Kin selection
* Kinetochore
* Klinefelter syndrome
* Knockout

## L

* Lac operon
* Lagging strand
* Lambda dgal
* Lambda phage
* Lateral inhibition
* Lawn
* Leader peptide gene
* Leader sequence (mRNA)
* Leader transcript
* Leading strand
* Leaky mutant
* Lesion
* Lethal gene
* Leu
* Leucine zipper
* Leukemia
* Li-Fraumeni syndrome
* Library (genetics)
* Ligase
* Line
* Linear tetrad
* Linkage
* Linkage analysis
* Linkage equilibrium
* Linkage group
* Linkage map
* Linking number
* Locus
* Lod score
* Lod score method
* Lymphocyte
* Lymphoma
* Lyon hypothesis
* Lys
* Lysate
* Lysis
* Lysogen
* Lysogenic
* Lysogenic bacterium

## M

* Macromolecule
* Macrorestriction map
* Malformation
* Manx
* Mapping
* Mapping function
* Mapping population
* Marfan syndrome
* Marker
* Marker retention
* Mass spectrometry
* Mate-killer
* Maternal effect
* Maternal inheritance
* Mating type
* Mean
* Medium
* Megabase
* Meiocyte
* Meiosis
* Meiospore
* Melanoma
* Melting of DNA
* Mendel's first law
* Mendel's second law
* Mendelian ratio
* Merozygote
* Messenger RNA
* Met
* Metabolism
* Metafemale
* Metagon
* Metamale
* Metamere
* Metaphase
* Metaphase plate
* Metastasis
* Methylation
* Metrical variation
* Microarray
* Microbial genetics
* Microinjection
* Micronuclei
* Microsatellite
* Microtubules
* Midparent value
* Migration
* Mimicry
* Minimal medium
* Mismatch repair
* Missense mutation
* Mitochondrial DNA
* Mitochondrial Eve
* Human mitochondrial genetics
* Mitochondrion
* Mitosis
* Mitotic apparatus
* Mitotic crossover
* Mixed codon family
* Mode
* Model organisms
* Modeling
* Modifier gene
* Molecular biology
* Molecular chaperone
* Molecular farming
* Molecular genetics
* Molecular imprinting
* Molecular medicine
* Molecule
* Monocistronic mRNA
* Monoclonal antibody
* Monoecious plant
* Monogenic disorder
* Monohybrid
* Monohybrid cross
* Monoploid
* Monosomic
* Monosomy
* Morbid map
* Morphogenesis
* Mosaic (genetics)
* Mosaicism
* Mouse model
* mRNA
* mtDNA
* Mu particle
* Mu phage
* Müllerian mimicry
* Multifactorial
* Multihybrid
* Multimeric structure
* Multiple allelism
* Multiplexing
* Murine
* Mutability
* Mutagen
* Mutagenicity
* Mutant
* Mutant allele
* Mutant screening
* Mutant site
* Mutation
* Mutation breeding
* Mutation event
* Mutation frequency
* Mutation rate
* Mutational load
* Mutator mutation
* Muton
* Myeloma
* Myotonic dystrophy

## N

* N segment
* N-end rule
* Narrow heritability
* Natural selection
* Negative control
* Neo-Darwinism
* Neomorph
* Neoplasm
* Neurofibromatosis
* Neurospora
* Neutral mutation
* Neutral petite
* Newborn screening
* NF
* Nickase
* Nicking
* NIH
* Nitrogen base
* Nitrogenous base
* Non-coding DNA
* Non-coding strand
* Non-directiveness
* Non-disjunction
* Non-histone protein
* Non-linear tetrad
* Non-Mendelian ratio
* Non-parental
* Non-recombinant
* Nonsense codon
* Nonsense mutation
* Nonsense suppressor
* Noonan syndrome
* Norm of reaction
* Normal distribution
* Northern analysis
* Northern blot
* NPD
* Nu body
* Nuclear transfer
* Nuclease
* Nucleic acid
* Nucleoid
* Nucleolar organizer
* Nucleolus
* Nucleoprotein
* Nucleoside
* Nucleosome
* Nucleotide
* Nucleotide pair
* Nucleotides
* Nucleus
* Null allele
* Null hypothesis
* Nullisomic
* Numerator element
* Nurse cell

## O

* Ochre codon
* Okazaki fragment
* Oligo
* Oligogenic
* Oligonucleotide
* Oncogene
* Oncogenes
* Oncovirus
* Oocyte
* Oogenesis
* Oogonia
* Opal codon
* Open reading frame
* Operator (biology)
* Operon
* Organelle
* Organogenesis
* Outbreeding
* Outside markers
* Overdominance
* Overlapping clones
* Ovum

## P

* P (peptidyl) site
* P element
* P1
* P53
* Palindrome
* Panmictic
* Paralogous genes
* Paramecin
* Parameters
* Parental
* Parental ditype
* Parental imprinting
* Parkinson's disease
* Parthenogenesis
* Partial digest
* Partial diploid
* Partial dominance
* Pascal's triangle
* Patent
* Path diagram
* Pathogen
* Pattern formation
* PCR
* PD
* Pedigree
* Penetrance
* Peptide
* Peptide bond
* Peptidyl transferase
* Permissive condition
* PEST hypothesis
* Petite mutation
* Phage
* Pharmacogenomics
* Pharming (genetics)
* Phe
* Phenocopy
* Phenotype
* Phenotypic variance
* Phenylketonuria
* Pheromone
* Phosphodiester bond
* Photoreactivation
* Phyletic evolution
* Phyletic gradualism
* Phylogenetic tree
* Phylogenetics
* Physical map
* Piebald
* Pilus
* PKU
* Plant breeding
* Plasmid
* Plastid
* Pleiotropic mutation
* Pleiotropy
* Pluripotency
* Point mutation
* Poisson distribution
* Poky mutation
* Polar body
* Polar granules
* Polar mutation
* Polar overdominance
* Polarity
* Polarity gene
* Pollen grain
* Poly(A) tail
* Polyacrylamide
* Polycistronic
* Polycistronic mRNA
* Polydactyly
* Polygene
* Polygenic disorder
* Polymerase
* Polymerize
* Polymorphism
* Polypeptide
* Polyploid
* Polyribosome
* Polysaccharide
* Polysome
* Polytene chromosome
* Population
* Population bottleneck
* Population genetics
* Position effect
* Positional cloning
* Positive control
* Pre-mRNA
* Precancerous polyp
* Predisposition
* Preemptor stem
* Prenatal diagnosis
* Pribnow box
* Primary oocyte
* Primary spermatocyte
* Primary structure
* Primary transcript
* Primase
* Primer
* Primosome
* Prion
* Privacy
* Pro
* Probability
* Probability theory
* Proband
* Probe
* Processivity
* Product of meiosis
* Product rule
* Proflavin
* Progeny testing
* Prognosis
* Prokaryote
* Prokaryotic cell
* Promoter
* Pronucleus
* Proofread
* Proofreader genes
* Prophage
* Prophase
* Prophylactic surgery
* Proplastid
* Propositus
* Prostate cancer
* Protease
* Protein
* Protein product
* Protein splicing
* Proteome
* Proteomics
* Proteus syndrome
* Proto-oncogene
* Protoplast
* Prototroph
* Provirus
* Pseudoallele
* Pseudoautosomal region
* Pseudodominance
* Pseudogene
* Public policy
* Punnett square
* Purine
* Purines
* Pyrimidine

## Q

* Quaternary structure

## R

* R factor
* R plasmid
* Radiation hybrid
* RAM mutation
* Random genetic drift
* Random mating
* Rare-cutter enzyme
* Reading frame
* Readthrough
* Reannealing
* Rec system
* Receptor element
* Recessive allele
* Recessive gene
* Recessive phenotype
* Reciprocal altruism
* Reciprocal cross
* Recombinant
* Recombinant clone
* Recombinant DNA
* Recon
* Reduction division
* Redundant DNA
* Regression
* Regulator element
* Regulator gene
* Relaxed mutant
* Renal cell cancer
* Renal cell carcinoma
* Renner complex
* Repeat sequences
* Repetitive DNA
* Replica plating
* Replication fork
* Replicon
* Replisome
* Reporter gene
* Repressible operon
* Repression
* Repressor
* Reproductive cells
* Reproductive success
* Repulsion (genetics)
* Restriction digest
* Restriction enzyme
* Restriction enzymes
* Restriction map
* Retinitis pigmentosa
* Retinoblastoma
* Retroviral infection
* Retrovirus
* Reverse genetics
* Reversion
* RF
* RFLP
* RFLP mapping
* Rho
* Ribonucleic acid
* Ribonucleotide
* Ribose
* Ribosomal protein
* Ribosomal RNA
* Ribosome
* Ribosomes
* Ribozyme
* Risk communication
* RNA
* RNA editing
* RNA phage
* RNA polymerase
* RNA replicase
* RNA splicing
* Robertsonian fusion
* rRNA
* Rule of segregation

## S

* S (Svedberg unit)
* S-9 mix
* Sanger sequence
* Sanger sequencing
* Sarcoma
* Satellite
* Satellite chromosome
* Satellite DNA
* Scaffold
* Scanning hypothesis
* Scientific method
* Screening
* Screening technique
* Second-site mutation
* Secondary oocyte
* Secondary structure
* Sedimentation
* Segmentation (biology)
* Segregation
* Segregational load
* Segregational petite
* Selection
* Selection progress
* Selective medium
* Selective neutrality
* Selective system
* Self
* Self-assembly
* Self-fertilization
* Selfed
* Selfish DNA
* Sense strand
* Sequence
* Sequence assembly
* Sequence tagged site
* Sequencing
* Sex chromosome
* Sex chromosomes
* Sex determination
* Sex linkage
* Sex linked
* Sex reversal
* Sex switch
* Sex-controlled trait
* Sex-influenced trait
* Sex-lethal
* Sex-limited trait
* Sex-linked
* Sex-ratio phenotype
* Sexduction
* Sexual selection
* Sexual spore
* Shotgun method
* Shotgun sequencing
* Shotgun technique
* Shuttle vector
* Siblings(sibs)
* Sickle-cell disease (Sickle cell anemia)
* Sigma factor
* Signal hypothesis
* Signal peptide
* Signal peptide
* Silent gene
* Silent mutation
* SINE
* Single-gene disorder
* Sister chromatids
* Skew
* Smooth endoplasmic reticulum
* SNP
* SnRNP
* Sociobiology
* Solenoid structure
* Somatic cell
* Somatic cell hybrid
* Somatic cells
* Somatic doubling
* Somatic mutation
* Somatic mutations
* Somatostatin
* SOS box
* SOS repair
* SOS response
* Southern blot
* Southern blotting
* Spacer DNA
* Speciation
* Speciation (genetic algorithm)
* Species
* Specific-locus test
* Spectral karyotype
* Sperm
* Spermatid
* Spermatocyte
* Spermatogenesis
* Spermatogonium
* Spermatozoon
* Spermiogenesis
* Spina bifida
* Spindle
* Spiral cleavage
* Spirillum
* Splice site
* Spliceosome
* Spontaneous mutation
* Sporadic cancer
* Spore
* Sporophyte
* Staggered cuts
* Standard deviation
* Statistic
* Statistics
* Stem cell
* Stem-loop structure
* Steroid receptor
* Stochastic
* Strain
* Stringent factor
* Stringent response
* Structural gene
* Structural genomics
* Substantial equivalence
* Substitution
* Subvital gene
* Suicide gene
* Supercoil
* Supercoiling
* Supergene
* Superinfection
* Supersuppressor
* Suppressive petite
* Suppressor gene
* Suppressor mutation
* Svedberg unit
* Swivelase
* Sympatric speciation
* Synapsis
* Synaptonemal complex
* Syncytial blastoderm
* Syncytium
* Syndrome
* Synexpression
* Syngeneic
* Synteny
* Synteny test
* Synthetic medium

## T

* T-cell receptor
* T-DNA
* TACTAAC box
* Tandem duplication
* Target theory
* Targeted mutagenesis
* TATA box
* Tautomeric shift
* Tay–Sachs disease
* Technology transfer
* Telomerase
* Telomere
* Telophase
* Temperate phage
* Template strand
* Teratogen
* Teratogenic
* Teratogens
* Terminal redundancy
* Terminator sequence
* Tertiary structure
* Test cross
* Tetrad
* Tetrad analysis
* Tetraparental mouse
* Tetraploid
* Tetratype (T)
* Theta structure
* Thr
* Three-point cross
* Thymidine
* Thymine
* Thymine dimer
* Ti plasmid
* Topoisomer
* Topoisomerase
* Totipotency
* Totipotent
* Toxicogenomics
* Trait (biological)
* Trans
* Trans conformation
* Trans-acting
* Transcription
* Transcription factor
* Transcriptome
* Transducing particle
* Transduction
* Transfection
* Transfer RNA
* Transferase
* Transform
* Transformation
* Transformer
* Transgenic
* Transgenic organism
* Transgressive phenotype
* Transient diploid
* Transition
* Transition mutation
* Translation
* Translocase (EF-G)
* Translocation
* Transposable element
* Transposition
* Transposon
* Transversion
* Trihybrid
* Triplet
* Triplet code
* Triploid
* Trisomic
* Trisomy
* Tritium
* tRNA
* Trp
* True heritability
* True speciation
* Truncation selection
* Tumour
* Tumour virus
* Turner syndrome
* Twin spot
* Twin study
* Two-point cross
* Type I and type II errors
* Typological thinking
* Tyr

## U

* Uncharacterized LOC644249 gene
* Underdominance
* Unequal crossover
* Uninemic chromosome
* Uniparental disomy
* Unique DNA
* Unmixed codon family
* Unstable mutation
* Unusual bases
* Upstream and downstream (DNA)
* Uptake signal sequence
* Uracil
* Uridine

## V

* V-J joining
* Val
* Variable region
* Variance
* Variate
* Variegation
* Vector
* Viability
* Virion
* Viroid
* Virulent phage
* Virus
* VNTR

## W

* Wahlund effect
* Weismann barrier
* Western blot
* Wild type
* Wilms' tumor
* Wobble
* Wolfram syndrome

## X

* X chromosome
* X hyperactivation
* X linkage
* X linked
* X-and-Y linkage
* X-inactivation
* X:A ratio
* Xenograft
* XYY
* XYY syndrome

## Y

* Y chromosome
* Y linkage
* Y linked
* Y-chromosomal Aaron
* Y-chromosomal Adam
* YAC
* Y-chromosome haplogroups in populations of the world

## Z

* Z-DNA
* Zinc finger
* Zinc-finger protein
* Zygote