Posts tagged hybrid
The recent completion of the maize (corn) genome sequence gives us pause to think about the historical connection between agriculture and eugenics. It also causes us to consider why the leading American eugenicist, Charles Davenport, failed take greater stock in the corn research going on at one of several institutions he presided over at Cold Spring Harbor.
Especially in the United States, eugenics was firmly grounded in agriculture. Many of the leaders of the American movement had backgrounds in plant and animal breeding. For example, prior to becoming superintendent of the Eugenics Record Office (ERO) at Cold Spring Harbor, Harry Laughlin had More >
Fraternal Rhesus Macaque twins, Mito and Tracker, have two different DNA mommies: their mother’s chromosomal DNA was injected into enucleated egg cells belonging to another Rhesus monkey female prior to fertilization. The eggs were fertilized, in vitro, with donor sperm and implanted in yet another female who carried the healthy twins to term.
The nucleus, where chromosomal DNA is stored and protected, is not the only source of DNA in a mammalian cell. Mitochondria have their own 16,569 bp genomes encoding 37 genes involved in the production of biological energy, ATP. Mutations in these genes have been linked with human diseases More >