Skin gets its color primarily from melanin, a pigment produced by melanocyte cells in the skin. The darker the skin, the more melanin it contains [source: MedicineNet ]. Freckles and beauty marks likewise indicate a higher concentration of the pigment in certain areas. Melanin also performs another vital function: It protects the skin against harmful UV rays.
APB Opinion No. 25, Accounting for Stock Issued to Employees, specifies that the measurement date for determining compensation cost in stock option, purchase, and award plans is the first date on which are known both (a) the number of shares that an individual employee is entitled to receive and (b) the option or purchase price, if any.
Calculating Conception. Gestational age, or the age of the baby, is calculated from the first day of the motherâs last menstrual period. Since the exact date of conception is almost never known, the first day of the last menstrual period is used to measure how old the baby is.Use our Pregnancy Calculator to calculate these dates for you.or a woman with a regular period, conception typically occurs about 11-21 days after the first day of the last period. Most women do not know the exact date of conception because it can be challenging to know exactly when ovulation occurs.