Examlex
Balanced polymorphism refers to two or more alleles of the same gene that maintain constant frequencies in a population from generation to generation.
Ova
The female reproductive cells or eggs in animals and humans, which when fertilized by sperm, can develop into a new organism.
Embryo
The early stage of development in many multicellular organisms, in humans it refers to the phase of development from conception until the eighth week of gestation.
Lungs
Organs in the respiratory system responsible for gas exchange, taking in oxygen and expelling carbon dioxide from the bloodstream.
Digestive System
A complex series of organs and glands responsible for the digestion and absorption of nutrients, and the expulsion of waste.
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