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Edmund Beecher Wilson experimented with Amphioxus (Branchiostoma) embryos in 1892 to identify what caused their cells to differentiate into new types…
Wilson, Edmund B. (Edmund Beecher), 1856-1939AmphioxusEmbryosEmbryologyDevelopmental BiologyHomeobox genes are a cluster of regulatory genes that are spatially and temporally expressed during early embryological development. They are…
Homeobox genesGenes, HomeoboxGeneticsThe most-watched NOVA documentary ever made and a revolution in the understanding of human development, The Miracle of Life (abbreviated Life)…
LiteratureReproductionHuman DevelopmentThe sex of a reptile embryo partly results from the production of sex hormones during development, and one process to produce those hormones depends…
Sex DifferentiationReproductionAdaptationfetal developmentEmbryologyHarald zur Hausen studied viruses and discovered that certain strains of the human papilloma virus (HPV), a sexually transmitted disease, can cause…
Cervix uteri--CancerHuman Papilloma VirusPapillomavirusesGenital WartsCondylomata AcuminataThis diagram shows the life cycle of Neurospora crassa, a mold that grows on bread. N.
Neurospora crassaMicrobiologyMicroscopyGrowthdevelopmentAt the turn of the twentieth century, William Bateson studied organismal variation and heredity of traits within the framework of evolutionary theory…
GeneticsHeredityMendel, Gregor, 1822-1884EvolutionEmbryologyThe Human Genome Project (HGP) was an international scientific effort to sequence the entire human genome, that is, to produce a map of the base…
OrganizationsHuman Genome ProjectNational Center for Human Genome Research (U.S.)National Human Genome Research Institute (U.S.)Sequence Analysis, DNATelomeres are structures at the ends of DNA strands that get longer in the DNA of sperm cells as males age. That phenomenon is different for most…
TelomereAgingSpermSpermatozoaTelomeraseAt the turn of the twentieth century, Edmund B. Wilson performed experiments to show where germinal matter was located in molluscs. At Columbia…
Wilson, Edmund B. (Edmund Beecher), 1856-1939EmbryosEmbryologyDevelopmental BiologyLarvae