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.
Dependent Exemption. You are allowed to take a personal exemption for each child you can claim as a dependent. In 2010 this exemption amount was $3,650, increasing to $3,750 in 2011. If you claim the dependent on your W4, then this will not show up in your tax return but rather will be included in your paycheck.