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.
Orange Topaz. Beside yellow and blue, topaz also occurs as orange stones. These orange gemstones come from two varieties of topaz, namely, precious topaz and imperial topaz, which is a pinkish orange and the more valuable of the two. Topaz is the traditional and modern birthstone for November.ext to red and purple diamonds, the orange precious stone is the rarest of diamonds. Like the rest of its kind, this orange rock is the hardest of minerals, and endowed with a high refractive index that makes this orange jewel shine brilliantly. For this reason, diamond is the most expensive of orange gemstones.