Edge Effect Examples (in Ecology)

An integral tenet of contemporary conservation biology discourse is the ongoing biodiversity crisis. Approximately 65 species go extinct daily, translating to an annual extinction rate of around 30,000 species. Although biological factors such as disease outbreaks and fierce interspecies competition contribute to this issue, increased human activity is to a great extent the leading cause …

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10 Examples of Effusion in Real Life

As stipulated in the kinetic molecular theory, solids, liquids, and gases are made up of tiny particles in constant motion. Solids and liquids are in condensed states wherein their particles are close together, thus limiting their range of movement. In contrast, air particles are sparsely packed, allowing them more room for random movement. Gaseous molecules …

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Examples of Chemotaxis in Real Life

Chemotaxis is a phenomenon where somatic cells, single-celled and multicellular organisms, and bacteria direct their movement according to specific chemicals in the environment. The word chemotaxis comes from two words; chemo (chemicals) and taxis (order and arrangement). Such chemical concentration gradient stimulated movements are crucial for the survival of the organisms.  In bacteria, for instance, …

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What Type of Symmetry do Cnidarians have?

What Type of Symmetry do Cnidarians have?

In biology, symmetry is a basic feature that is observed in many living things. Basically, this is a type of order that is shown in the arrangement of body parts of the organism. However, not all living things have symmetry.  Living things lacking symmetry are called asymmetrical to distinguish them from symmetrical organisms.  When it …

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Do all Cells have DNA?

Do all Cells have DNA?

DNA (deoxyribonucleic acid) has been described as the molecule of life. It has been found in the cells of all organisms that have ever been observed. But is it possible that we could have organisms with no DNA?  So far, the organisms we know are just a fraction of all living organisms. Many more organisms …

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8 Stabilizing Selection Examples in Everyday Life

Stabilizing Selection Examples in Everyday Life

We often think of the average guy as unspectacular. He doesn’t win the medals or get the highest grades. However, he also doesn’t fail but just gets by. This mediocrity makes his chances of surviving just as good as losing. But in biology, average individuals can become consistent big winners, outshining their counterparts through stabilizing …

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10 Examples of Disruptive Selection in Daily life

Examples of Disruptive Selection in Daily life

If you look at a collection of almost anything—people, objects, animals—those with average characteristics dominate in numbers. e.g. for humans those who are of average height, weight, etc are in the majority. However, when it comes to disruptive selection, this rule doesn’t apply.  Disruptive selection is a kind of natural selection in biology where individuals …

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