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 Care for Veterans. VA offers health care benefits for Veterans who may have been exposed to certain environmental hazards during military service. These services include health registry evaluations and clinical treatment at VAâs War Related Illness and Injury Study Center. Eligibility for health care benefits. Veterans first must enroll in VAâs health care system to receive care. There are many ways a Veteran may qualify. VA provides priority enrollment for health care to certain Veterans, including Veterans who have disabilities that VA has determined are military service-connected.