Certification. If a sonographer has obtained education through a college or university, the sonographer must pass an exam in order to get their certification. Some states require that ultrasound technicians be licensed, which requires them to hold current certification.
diploid â(not comparable) (cytology) Of a cell, having a pair of each type of chromosome, one of the pair being derived from the ovum and the other from the spermatozoon. Most somatic cells of higher organisms are diploid.
Diploid cells are cells which contain 2 sets of chromosomes, which will later be divided into two sets of 23 chromosomes for each daughter cell. The total will come up to be 46 chromosomes. The other type of cell is a haploid.