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.
If you are caring for your mother or father, you may be able to claim your parent as a dependent on your income taxes. This would allow you to get an exemption ($3,950 for tax year 2014) for him or her.