flask-shaped structure in the pellicles of some protists used to defend and anchor the organism
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Trichocyst
flask-shaped structure in the pellicles of some protists used to defend and anchor the organism..
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..
Psychiatry & Mental Disorders
Different mental disorders are described here. Read this tutorial to get an overview of schizophrenia, affective mood di..
Fish
The sea was teeming with life. Eventually, through reproduction and continued variation, fish came about. There are over..
Indicator Species and Endangered Species
Certain species are capable of expressing characteristics indicative of the state of the ecosystem they occupy. They are..
The Evolutionary Development of Multicellular Organisms
Multicellular organisms evolved. The first ones were likely in the form of sponges. Multicellularity led to the evolutio..
Darwin and Natural Selection
This tutorial investigates the genetic diversity in more detail. It also delineates how certain alleles are favored over..
