As in autosomal recessive inheritance, two copies of a disease allele on the X chromosome are required for an individual with two X chromosomes (a female) to be affected with an X-linked recessive disease.
The form 1098-T is used by the student or whoever pays the qualified tuition or educational expenses to claim a credit to taxes filed on IRS Form 1040 or 1040-A. The form will show the student's name, address, social security number and other identifying information.
Use the worksheet found in Form 1040-ES, Estimated Tax for Individuals to find out if you are required to file quarterly estimated tax. Form 1040-ES also contains blank vouchers you can use when you mail your estimated tax payments or you may make your payments using the Electronic Federal Tax Payment System (EFTPS) .