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.
Quick Answer. The normal blood pressure range for adults, including elderly adults, is 120/80 or below, according to the National Institute on Aging. In elderly people, systolic readings are often greater than 140 with a diastolic reading of less than 90; this condition, known as systolic hypertension, is common with age. Continue Reading.