The process of natural selection involving the genome for a species directionally choosing certain genes to remain prominent in the species, such as a growth in size in response to predation.
Dictionary > Directional Selection
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Directional Selection
The process of natural selection involving the genome for a species directionally choosing certain genes to remain prominent in the species, such as a growth in size in response to predation...
Takahē (Porphyrio hochstetteri)
Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..
Homeostasis of Organism Water Regulation
Osmoregulation is the regulation of water concentrations in the bloodstream, effectively controlling the amount of water..
Homeostatic Mechanisms and Cellular Communication
Homeostasis is the relatively stable conditions of the internal environment that result from compensatory regulatory res..
Genetics and Evolution
Humans are diploid creatures. This means that for every chromosome in the body, there is another one to match it. Howeve..
Muscle
Muscle cells are specialized to generate force and movement. Learn about the different types of muscle tissues in this t..
Origins of Life on Earth
Earth was created around 4.5 billion years ago and life began not long after. Primitive life likely possessed the elemen..
