From Wikipedia, the free encyclopedia. The molecular clock (based on the molecular clock hypothesis (MCH)) is a technique in molecular evolution that uses fossil constraints and rates of molecular change to deduce the time in geologic history when two species or other taxa diverged.he molecular clock alone can only say that one time period is twice as long as another: it cannot assign concrete dates. To achieve this, the molecular clock must first be calibrated against independent evidence about dates, such as the fossil record.
Service-Disabled Veterans' Life Insurance (S-DVI) provides life insurance coverage to Veterans who have been given a VA rating for a new service-connected disability in the last two years. Totally disabled Veterans are eligible for free coverage and have the opportunity to purchase additional life insurance.
Health insurance coverage in the United States. Health insurance coverage is provided by several public and private sources in the United States. During 2016, the U.S. population overall was approximately 325 million, with 53 million persons 65 years of age and over covered by the federal Medicare program. The 272 million non-institutional persons under age 65 either obtained their coverage from employer-based or non-employer based sources, or were uninsured. Approximately 15 million military personnel received coverage through the Veteran's