group of organisms (all of the same species) that is genetically self-sustaining and isolated geographically or temporally during reproduction.
A special variety of domesticated animals within a species; he experimented on a particular breed of white rats; he created a new strain of sheep.
You will also like...
Viruses possess both living and non-living characteristics. This unique feature distinguishes them from other organisms...
The circulatory system is key to the transport of vital biomolecules and nutrients throughout the body. Learn about the ..
Plant cells have plastids essential in photosynthesis. They also have an additional layer called cell wall on their cell..
Proteins and minerals can be derived from various dietary sources. They are essential for the proper growth and developm..
Darwin's Finches are an example of natural selection in action. They are an excellent example of the way species' gene p..