Cytology and CytogeneticsPrentice-Hall, 1957 - 596 pagine |
Parole e frasi comuni
aberrations alleles anaphase apomictic apomixis appear autosomes bacteriophage behavior bivalents breakage Bridges cell division centric centromere chemical chiasma chiasmata chro chromatids chromo chromomeres chromosome number coiling complex crossing cytological cytoplasm deficiencies deletions determined differentiation diploid dose double crossovers Drosophila duplication effect euchromatin females fertilization formation frequency function gametes genes genetic genic haploid heterochromatin homologous homozygous hybrid hypothesis indicated induced interphase inversions involved ionizing karyotype known length lethals linkage groups loci locus maize male mechanism meiosis meiotic melanogaster metaphase microspores mitosis mitotic mosomes mutagens mutations normal nuclear nucleic acid nucleus occur organisms origin pairing parthenogenesis percent phenotype plants pole pollen polyploidy produced prophase protein radiation ratio recombination region result ring ring chromosomes roottip segregation sexual similar single somatic species sperm spermatocytes spindle Stebbins structure studies suggests Swanson synapsis takes place telophase tetraploid tion tissues Tradescantia translocation triploid X-chromosome x-rays