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.
What is normal blood pressure? An optimal blood pressure level is a reading under 120/80 mmHg. Readings over 120/80mmHg and up to 139/89mmHg are in the normal to high range. Your doctor will advise what your ideal blood pressure should be based on your circumstances. What is high blood pressure? Blood pressure over 140/90mmHg is generally considered to be high. When your blood pressure is high your heart and arteries can become overloaded.