Beginning of Human LifeZygotePersonhoodJudaismHuman CharacteristicsLifeValue of LifeBioethical IssuesHuman DevelopmentEthical TheoryReligion and MedicinePhilosophy, MedicalLongevityQuality of LifeMoralsEthics, MedicalPregnancy Reduction, MultifetalEmbryo ResearchCloning, OrganismZygote Intrafallopian TransferBiological EvolutionAgingPregnancyBlastocystFertilizationPhaeophytaCleavage Stage, OvumFertilization in VitroEmbryonic DevelopmentOocytesEmbryo Culture TechniquesEmbryo TransferEmbryonic and Fetal DevelopmentMorulaEmbryo, MammalianSperm Injections, IntracytoplasmicSpermatozoaLife Cycle StagesTime FactorsMicroinjectionsCryopreservationEmbryo ImplantationLife Change EventsCell Nucleus