Natural Selection

Sleeping in Flight: Adaptations of a Bird’s Brain

Flying has required birds to develop a plethora of tools to make it as efficient as possible. These biological tools range from different body sizes, body weights, wingspans, feather numbers and their distribution, to an increase in brain to body size ratio to accommodate more developed functions. Multiple types of…

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Design, Purpose and Specificity of the Narwhal’s Tusk

The narwhal’s tusk is a fascinating organ as it has the composition of a tooth but very different properties, in particular its ability to grow in a straight line. To understand the design mechanism allowing this particular feature, we will first present the composition, function and properties of the tusk.…

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Visual Lateralization in the Animal Kingdom

The vertebrate brain has succeeded in the specialization of different traits and abilities through dividing it into two hemispheres, where the left hemisphere is better than the right one when conducting certain tasks, and vice versa. This specialization, called brain lateralization, also effects vision in vertebrates. In fact, visual lateralization,…

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The Optical Properties of Camera Eyes

Sight undeniably plays a crucial role in the lives of many organisms on Earth. Many species heavily rely on sight for their survival; vision provides to them the early warning stimuli signaling the presence of a threat. However, it also enriches our perception of our surroundings, giving it color, form,…

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Rodent Adaptations to Ever-growing Teeth

Rodents have ever-growing incisors as a result of their chew-intensive diets. The potential consequences of this growth are numerous and can cause serious diseases for these animals. To avoid these outcomes, the structures and mechanisms involved in the function of nutrition must adapt to this trait. Therefore, the incisors are…

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