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.
Asker's rating. 1  The diploid number of a cell is the total number of chromosomes it contains. In humans the diploid number is 46. 2  haploid cells only have half of the chromosomes. when two haploid cells join, they form a diploid cell (fertilization) zack Â· 1 decade ago.