The reproductive cycle in females coordinated by the pituitary gland and its hormone secretion which affects the availability of gametes readily available to be fertilised and maintains the presence of secondary sexual characteristics.
Hormones are essential in the regulation of the activity of the various biological systems of the human body. The ineffi..
With regard to the population size of a species and what factors may affect them, two factors have been defined. They ar..
Freshwater ecology focuses on the relations of aquatic organisms to their freshwater habitats. There are two forms of co..
One of Mendel’s law of inheritance is the “law of dominance”. Read this tutorial to know more about this form of i..
Molecules move within the cell or from one cell to another through different strategies. Transport may be in the form of..
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..