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...
Growth and Plant Hormones
Plants, like animals, produce hormones to regulate plant activities, including growth. They need these hormones to respo..
Meiosis – The Genetics of Reproduction
Meiosis is a form of cell division that creates gametes. It is comprised of two divisions that in the end, the resulting..
Human Reproduction and Fertilization
For human species to obviate extinction, reproductive mature adults should be producing viable offspring in order to con..
The Homo Species
The evolution of the species of the genus "Homo" led to the emergence of modern humans. Find out more about human evolut..
Abiotic and Biotic Factors
This tutorial deals with the abiotic factors of the freshwater environment that determine what sort of life would be sui..
Takahē (Porphyrio hochstetteri)
Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..
