A two-trait Punnett Square has 16 boxes. The probability of a cross producing a genotype in any box is 1 in 16. If the same genotype is present in two boxes, its probability of occurring doubles to 1/8 (1/16 + 1/16).
November born individuals, are blessed with two ruling Birthstones, the revered Topaz and the gentle, healing Citrine. Topaz is a gemstone exhibiting an array of spectacular colors. The stone was believed to be symbolic of the Egyptian Sun God Ra, with its brilliant golden glow and fiery intensity.
December has three birthstones assigned to it, zircon, turquoise, and tanzanite, which was added in 1912. Tanzanite was discovered in the 1960âs in Tanzania. It ranges in color from blue to purple. This stone is frequently heat treated to achieve an optimum violet-blue color.