View full size image. How long a healthy pregnancy lasts can vary by as much as five weeks, even when doctors precisely determined the date of conception, a new study suggests.
Exemptions for dependents. You can usually claim an exemption for each of your dependents. A dependent is either your child or a relative who meets a set of tests. You can't claim your spouse as a dependent. You must list the Social Security number of each dependent you claim on your tax return.
In general, dependents are exemptions that reduce a taxpayer's taxable income. Taxpayers typically can take an exemption for each of his or her dependents. Spouses are not considered dependents from a tax perspective. To claim someone as a dependent, the dependent must be a U.S. citizen, a U.S. resident alien, a U.S. national resident, or a resident of Canada or Mexico for some part of the year. Adopted children have some special exceptions to this rule. The filer must provide Social Security numbers for all dependents.