embryonic tissue, oocyte, homologous chromosomes, ovum, embryo, oviducts, sperm, gastrulation, conceptus, ovule, blastomeres, somatic cell, mosaicism, zona pellucida, peroxisome, fertilized ovum, xenopus laevis, metazoans, chimerism, rhesus, corpus luteum, hermaphroditism, acinar, epididymis, introgression, spermatozoa, meiotic, centrioles, rh factor, zygote, dedifferentiation, monozygotic, morphogen, prokaryote, chordates, rotifer, amnion, nephron, agrobacterium tumefaciens, embryogenesis, gametophyte, outcrossing, xenopus, ontogeny, teratoma, blastocyst, meristem, centrosomes, monozygotic twin, coevolution, amniotic cavity, morphogenesis, schistosome, teratology, morula, tubal, gonadal, macromolecule, in vitro, spermatogenesis, hirschsprung, hmg, synapsis, ovary, metaplasia, yolk sac, chromatids, asexual reproduction, lymphoblasts, karyotype, histocompatibility, fertilized egg, prenatal diagnosis, hindbrain, symbiont, epiblast, biogenesis, trophoblast, teleost fish, centromeres, chimeras, mesoderm, chirality, passaging, backcross, anergy, estrous cycle, planarian, mononuclear, cyto, phylogenies, leucocytes, anthers, ectoderm, epithelia, choroid plexus, exonuclease, polyploidy, somites, planaria, eukaryote, organismal, gametes, spermatozoon, chromosome, spore, zygotes, clone, sperms, genotype, ova, chromosomes, clones, conidia, gonads, progeny, t., gametic, endothelial, pollen, zygotic, cell, hyphal, astroglial, granule, lymphocyte, osteoclast, ascus, endocrine, galactosidase, gametophytic

anisogamete, antherozoid, egg cell, isogamete, oosphere, spermatid, spermatozoid, sperm cell

amphimixis, antherozoid, bryophyta, division bryophyta, egg cell, gametocyte, gametophyte, law of segregation, ovum, sexual reproduction, sperm, spermatid, spermatozoan, spermatozoid, spermatozoon, sperm cell

germ cell, reproductive cell, sex cell