There are several reasons why you may want to file or efile a 2016 tax return even if you do not meet the minimum income requirements: 1  If you had taxes withheld from your pay, you must file a tax return to receive a tax refund. 2  If you qualify, you must file a return to receive the refundable Earned Income Tax Credit.
The antinuclear antibody (ANA) test is used as a primary test to help evaluate a person for autoimmune disorders that affect many tissues and organs throughout the body (systemic) and is most often used as one of the tests to help diagnose systemic lupus erythematosus (SLE).
Likewise, abnormal separation can occur in meiosis when homologous pairs fail to separate during anaphase I. This also results in daughter cells with different numbers of chromosomes. The phenomenon of unequal separation in meiosis is called nondisjunction.