The Latin name is from the Japanese name for T. sieboldii. T. canadensis and T. heterophylla were discovered early (before 1800) and until 1855 were simply treated as species of Pinus, but in 1842 T. sieboldii, the southern Japanese hemlock, was described as Abies tsugae.
The brains of the cell, the nucleus directs cell activities and contains genetic material called chromosomes made of DNA.
Which organelle contains most of the cells genetic material and directs most of the cell activities? nucleus contains all of the DNA of a cell with the exception of mitochondrial or chloroplast DNA. It also directs the rest of the cell