Question

Female mammals have two x chromosomes, one from their mother and one from their father. during x inactivation, one x chromosome in each embryonic cell is randomly inactivated; therefore, all of the tissues that arise from that cell have the same inactivated x chromosome. female mammals are therefore considered to be __________ of the maternal and paternal cells.

Answer 1

Because of the fact that female mammals have chromosomes from both parents (from the father and from the mother) and all cells have the same inactivated X chromosome  female mammals are considered to be mosaic of the maternal and paternal cells.