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.
High Blood Pressure - The pressure or tension exerted by the blood on the arteries and the venous blood vessels is called blood pressure. Normal blood pressure is less than 120/80 mmHg, where 120 is the systolic blood pressure (SBP) and 80 is the diastolic blood pressure (DBP). High blood pressure occurs when the blood is pumped by the heart through the system that is abnormally fast and powerful.