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.
Modern Birthstone. December babies are super lucky! Of all the months of the year, only a few feature three separate birthstones. Decemberâs birthstones are turquoise, blue zircon, and tanzanite. Evocative of the cold winter month, it should be no surprise that all three of these gemstones exhibit various tones and hues of blue.