These coins come from many of the most recognizable world powers, including the United States, Canada, Mexico, Britain, Australia, and China. Though there are silver coins that are released by governments all over the world, these countries are the most well-known.
Nirmala Agarwal. Advertisements: Chromosome: 1. Chromosomes are single physical structure and hereditary traits, which are transmitted through them. 2. The structure of chromosome is best studied at the metaphase, which possesses two chromatids held by a single centromere. Chromatid: 1. Each chromosome consists of two symmetrical strands called chromatids, formed during S-phase. 2. Each chromatid is half of the metaphase chromosome.
Sister chromatids (pronounced KRÅ-mÉ-tidz) are the two identical halves of a single replicated eukaryotic chromosome. They are joined at the centromere (see diagram at right) and genetically identical because, during interphase, they are produced from the two complementary strands of a single duplex DNA molecule (). single replicated chromosome has two sister chromatids. One chromatid is shown in yellow, the other in blue. The two chromatids contain exactly identical chains of double-stranded DNA, as well as a protein support structure composed of mostly of histones. Histones are proteins present in all eukaryotic cells.