fraternal twin, twins, brother, dizygotic, monozygotic, sibling, father, redheaded, triplet, sisters, quintuplets, valentina tereshkova, monozygotic twin, sons, eldest, pyloric stenosis, estranged, married, astronaut, playmates, conjoined twin, daughters, pixieish, cousin, divorced, tereshkova, undescended testicle, sibs, conjoined, firstborn, quadruplet, chromosomally, genetic abnormality, congenital disorder, dad, gawkiness, nulliparous, studly, towheaded, telepathic, born, husband, genetic defect, genetic disorder, prairie vole, hydrops, changeling, recessive gene, spacewoman, teenaged, mother, abort, chrissie evert, uncle, womb, blond, earthling, hunky, sextuplet, dromio, polydactylism, aquanaut, godparents, myelomeningocele, grandsons, coster, fiance, youngest, chromosomal aberration, achondroplasia, offspring, sir francis galton, stepfather, encephalocele, fiancee, brainy, wife, chromatids, daddy, coarctation, rumer, gawky, precocious, rhabdomyosarcoma, teenage, trisomy, plagiocephaly, aliena, opposites, debus, cymes, proband, galactosemia, antipholus, omphalocele, older, cardiomyopathy, incompetent cervix, nonhereditary, vixenish, stepmother, grandfather

twin

monozygotic twin, monozygous twin