There is no chart. I’ll tell you a song that tells the elements in order.
There's Hydrogen and Helium Then Lithium, Beryllium Boron, Carbon everywhere Nitrogen all through the air With Oxygen so you can breathe And Fluorine for your pretty teeth Neon to light up the signs Sodium for salty times MAGNESIUM, Aluminum, Silicon, PHOSPHORUS Then Sulfur, Chlorine, and Argon POTASSIUM and Calcium so you'll grow strong SCANDIUM, Titanium, Vanadium and Chromium and MANGANESE This is the Periodic Table Noble Gas is stable Halogens and Alkali react aggressively Each period we'll see new outer shells While electrons are Added moving to the right Iron is the 26 then Cobalt Nickel coins you get Copper, Zinc, and Gallium Germanium and Arsenic Selenium and Bromine film While Krypton helps light up your room Rubidium and Strontium Then Yttrium, Zirconium NIOBIUM, Molybdenum, Technetium RUTHENIUM, Rhodium, Palladium SILVER-WARE then Cadmium and Indium TIN-CANS, Antimony then Tellurium and Iodine and Xenon and then Caesium and Barium is 56, and this Is where the table splits Where lanthanides have just begun Lanthanum, Cerium and Praseodymium Neodymium's next to Promethium then 62 Samarium, Europium Gadolinium, and Terbium Dysprosium, Holmium, Erbium Thulium, Ytterbium, Lutetium HAFNIUM, Tantalum, Tungsten Then we're on to RHENIUM, Osmium, and Iridium PLATINUM, Gold to make You rich 'till you grow old MERCURY to tell you When it's really cold THALLIUM and Lead then Bismuth for your tummy POLONIUM, Astatine would not be yummy RADON, Francium will last a little time RADIUM then Actinides at 89 This is the Periodic Table Noble Gas is stable Halogens and Alkali react aggressively Each period we'll see new outer shells While electrons are to the right Actinium, Thorium, Protactinium Uranium, Neptunium, Plutonium Americium, Curium Berkelium, Californium Einsteinium, Fermium, Mendelevium, Nobelium Lawrencium, Rutherfordium Dubnium, Seaborgium Bohrium, Hassium then Meinerium, Darmstadtium Roentgenium, Copernicium Ununtrium Flerovium Ununpentium Livermorium Ununseptium Ununoctium And then we're done
Aberrant karyotypes containing an abnormal number of chromosomes are known in the human species. The best-known (and most common) chromosomal abnormality is trisomy 21, which is responsible for Down syndrome (mongolism). There are others such as Turner syndrome (woman with a single X chromosome) or Klinefelter syndrome (man XXY).
These abnormalities originate from the non-disjunction of the chromosomes of a pair of homologues during metaphase I of meiosis. At the end of division I, a daughter cell contains the two chromosomes of the pair considered and the other cell does not contain a chromosome of this pair. A similar result can be obtained during a bad distribution of chromatids during anaphase II.
After fertilization from a gamete of this type, a trisomy or a monosomy is obtained.
