If the genes for the two traits are on the same chromosome, alleles for each trait will always appear in the same combinations (ignoring recombination). With one row or column for each allele combination, the total number of boxes in a Punnett Square equals the number of rows times the number of columns.
November Birthstone Color. The November birthstone color is usually light to dark yellow, however, topaz, the official November birthstone comes in a range of great colors such as several shades of yellow, pale green, blue, red, pink, black, and brown. Pure topaz is actually a colorless stone. The red and pink topaz gets their color from chromium.
Citrine, derived from the French word for lemon, in all of its glorious golden and yellow colors, is the most affordable of all the earth-toned gemstones and is the alternate birthstone for November. Ametrine is as affordable as regular amethyst or citrine, and you can have both gemstones for the price of one.