polyploidy. 1  the condition in which a normally diploid cell or organism acquires one or more additional sets of chromosomes. 2  Ploidy, the concept of the number of complete sets of genes organized into chromosomes, is inapplicable to prokaryotes. ... 3 from it in essence.
Healthcare providers consider a normal blood pressure reading to be 120/80 or below. However, it can actually fall anywhere in a range from 90/60 to 120/80 -- it's not just one set number. The number on top of the reading is called the systolic pressure.
The normal blood pressure is between 90/60 mmHg and 130/80 mmHg. You can term a blood pressure reading of 90 mercury (mm Hg) or less systolic blood pressure or 60 mm Hg or less diastolic blood pressure, as a case of hypotension. [ Read: Symptoms Of Anemia In Children ]