Scientists examining the genomes of West Africans have detected signs that a mysterious extinct human species interbred with our own species tens of thousands of years ago in Africa.
The study indicated that present-day West Africans trace a substantial proportion, some 2 percent to 19 percent, of their genetic ancestry to an extinct human species - what the researchers called a "ghost population.
Previous genetic research showed that our species interbred with both the Neanderthals and Denisovans, with modern human populations outside of Africa still carrying DNA from both.
The Permanent Account Number (PAN) will become inoperative if it is not linked with Aadhaar by March 31, 2020, the Income Tax department has said.
The deadline for linking of PAN and Aadhar has been extended several times and the current deadline ends on March 31, 2020.
The notification further said that persons whose PANs become inoperative shall be liable for all the consequences under the I-T Act for not furnishing, intimating or quoting the permanent account number.