A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is copied or as the result of environmental factors such as UV light and cigarette smoke.
If you were born in 1929 or later, you need to work at least 10 years to become eligible for Social Security. The SSA determines eligibility with a system of credits. Basically, you earn up to four credits for every year worked, and you need a total of 40 credits to qualify for Social Security.
The earliest you can apply for Social Security retirement is three months before you turn age 62 to receive your first check in the month you become 62 years old. When you apply for Social Security after age 62, you can designate the month you want benefits to begin from the current month up to four months in the future. Social Security benefits are paid in the month after they are earned, so if you elect to start your retirement benefits for the current month, the first check will arrive next month. As a result, you can delay applying for Social Security on a month-to-month basis until the month before you want to get your first payment.