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 Birthstone: Blue Topaz. December Birthstone Color is Blue. The traditional December birthstone is the Blue Zircon, but there are various alternatives that are considered representative of December including turquoise, blue topaz and tanzanite. Blue Zircon is a natural gem (not to be confused with synthetic cubic zirconia) that is found in several places and mined primarily in Thailand, Cambodia and Vietnam.