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.
When the person you want to claim as a dependent can't be your qualifying child, earns gross income that's less than the dependent exemption amount for the year, and you're responsible for more than one-half his support requirements, he may be a qualifying relative whom you don't have to live with to claim.