Evolutionary Biology

Exploring the Controversial Theory of the Selfish Gene and Its Implications for Evolutionary Biology and Human Behavior Introduction Richard Dawkins’ book “The Selfish Gene” was published in 1976 and quickly became a classic in the field of evolutionary biology. The book introduced the concept of the “selfish gene,” which proposes that…

What is the reason that unlike other primates we humans have lost fur? — Apes like gorilla 🦍, chimpanzee, orangutan 🦧 and gibbon, our closest evolutionary relatives, have a thick coat of fur on their bodies. Other mammals too including big cats, wolves, squirrels, etc. possess protective furs which help with body temperature regulation at night: they provide insulation against the cold and preserve…

We understand that the need for sexual dimorphism arose to make sexual reproduction more precise and effective. But, among the bodily differences, the question arises: why is it that the female sex, especially among mammals, bears an enormous initial burden of parental investment? It is the mother who has to…

The pupils’ orientation is related to the animals’ lifestyle. Goats, sheep, horses, cats and many other animals have pupils that vary from circular in the dark, to slits or small rectangles in bright light, to modulate the amount of light entering the eye. In fact, a cat’s pupil can increase…

That’s not what actually happened, but there is no rule against it. The evolution of animals is simply the result of contingency, not driven by any necessity. Yet intuitively it seems obvious that it is easier to exploit traits already present, such as fins, to crawl on land rather than…

Evolutionary biologists are familiar with the concepts of Divergent and Convergent evolution. Species sharing a common origin diverge over eons of evolutionary processes and develop into widely different entities incapable of breeding together — while convergent evolution brings together unrelated species that have become functionally related. …

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