identical twins
Same-egg siblings
Identical twins are siblings who develop from a single fertilized egg that splits in two, giving them the same genetic material.
They are always the same sex and typically look remarkably alike, though environmental factors create some differences.
The identical twins finished each other's sentences.
Fraternal twins, by contrast, develop from separate eggs and share no more DNA than ordinary siblings.
One who closely resembles another
- mirror imageReversed visual duplicate
- spitting imageExact likeness of another
- indistinguishableImpossible to tell apart
- matchingIdentical in appearance
doppelganger · carbon copy · double · clone · replica · interchangeable · same face · uncanny resemblance
From one fertilized egg
- DNAHereditary code molecule
- zygoteFirst embryonic cell
- chromosomesGene-bearing nuclear structures
- genotypeOrganism's complete allele set
genome · genes · alleles · phenotype · epigenetics · inheritance · replication · heredity
Male children of same parents
- sistersFemale kin or nuns
- tripletsThree born together
- quadrupletsFour simultaneous births
- familyRelated people together
birth order · womb · multiples · littermates · siblings · kinship
A joining or relation
- closenessState of proximity
- togethernessState of close connection
- empathySharing another's emotions
- telepathyDirect mental communication
kinship · rapport · unity · affinity · understanding · inseparable · synchronicity · codependency
Untreated subjects for comparison
- nature vs nurtureWhat shapes us more
- heritabilityGenetic share of variation
- concordanceAlphabetical word index
- discordanceConflicting elements together
separated at birth · reunited · psychology · behavioral genetics · environment · development
lookalike
One who closely resembles another
- mirror imageReversed visual duplicate
- spitting imageExact likeness of another
- indistinguishableImpossible to tell apart
matching · doppelganger · carbon copy · double · clone · replica · interchangeable · same face · uncanny resemblance · duplicate
monozygotic
From one fertilized egg
- DNAHereditary code molecule
- zygoteFirst embryonic cell
- chromosomesGene-bearing nuclear structures
genotype · genome · genes · alleles · phenotype · epigenetics · inheritance · replication · heredity · mutation
brothers
Male children of same parents
- sistersFemale kin or nuns
- tripletsThree born together
- quadrupletsFour simultaneous births
family · birth order · womb · multiples · littermates · siblings · kinship
connection
A joining or relation
- closenessState of proximity
- togethernessState of close connection
- empathySharing another's emotions
telepathy · kinship · rapport · unity · affinity · understanding · inseparable · synchronicity · codependency · attachment
control group
Untreated subjects for comparison
- nature vs nurtureWhat shapes us more
- heritabilityGenetic share of variation
- concordanceAlphabetical word index
separated at birth · discordance · reunited · psychology · behavioral genetics · environment · development
- Family Resemblancespitting image, look-alike, family resemblance, takes after, carbon copy
- twin studiesmonozygotic, dizygotic, zygosity
- twin tropes
- twin portraitsdouble portrait, side by side
- Cloningclone, human cloning, gene cloning, reproductive cloning, animal cloning
- doublesdouble, doubles, duplicate, duplicates, copy
identical twinsfraternal twins
Non-identical siblings born together
complete strangers · polar opposites · odd couple · doppelgangers · look-alikes
twin, identity, identify, twins, identical, identified, identification, identities, identifies