Definition noun A medical term used to refer to a condition or state in which a woman has never given birth to a child, or has never carried a pregnancy. Supplement Word origin: from Latin nūllus, none + parere, to give birth. Related forms: nulliparous (adjective). Compare: multiparity...
Learn how the way genes control and determine every aspect of the body. This lesson uses lac operon as an example. ..
..
The cell is defined as the fundamental, functional unit of life. Some organisms are comprised of only one cell whereas o..
Find out more about New Zealand's unique biodiversity by exploring a range of different ecosystems and the key role of s..
Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..
