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.
1 Normal blood pressure readings are below 120/80 mm Hg. 2  High blood pressure (hypertension) is generally considered to be a blood pressure reading greater than or equal to 140 mm Hg (systolic) or greater than or equal to 90 mm Hg (diastolic).n general, everyone should restrict their sodium intake to no more than 2,400 mg a day (less than 1 teaspoon of salt). This is particularly important for people over age 50, all African-Americans, and everyone with high blood pressure.