It initially created many more jobs, by enhancing worker productivity through the use of technology (from an electric drill, to a calculator). As technology progressed the tools became more powerful, and it then became more efficient to use more capital and less labour in these industries.
CH 9 1. When a DNA molecule doubles, a chromosome is then made up of two joined _______. Answer: chromatids 2. Prokaryotic DNA molecules are packaged by _______ proteins, which associate with DNA. Answer: basic 3. In general, the division of the cell, called _______, follows immediately upon mitosis.
DNA's double helix is like a long twisted ladder. The rungs of the ladder are made of pairs of four molecules called nucleotides. Adenine (A) and thymine (T) always bond together as a pair, as do cytosine (C) and guanine (G) Our genetic code is made of 3 billion pairs.