The X and Y Chromosomes Determine Your Sex. One chromosome pair - the sex chromosomes - is unique. You don't necessarily end up with a matching pair. Typically females have two X chromosomes and males have an X and a Y. Mothers always pass an X chromosome on to their children.
On the other hand, the absorption of nonheme iron, the major dietary pool, is greatly influenced by meal composition. Ascorbic acid is a powerful enhancer of nonheme iron absorption and can reverse the inhibiting effect of such substances as tea and calcium/phosphate.
Vitamin C is equally well absorbed by your body whether it comes from food or supplements; however, once you take 1 gram or more a day, you will absorb less and excrete more. This is your body's way of regulating how much vitamin C is circulating or stored in your body at any given time.