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...
For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..
This tutorial investigates perception as two people can interpret the same thing differently. Know more about human perc..
This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..
The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..
Gregor Mendel's studies into Monohybrid and Dihybrid crossing and Charles Darwin's study of evolution and natural select..
Part of the genetic information is devoted to the synthesis of proteins. mRNA, a type of RNA, is produced as a transcri..
