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Chicken or egg: What came first? 

We continue to be fascinated by a riddle that has been around for centuries: which came first, the chicken or the egg? This fascinating conundrum reveals previously hidden layers of evolutionary history. It begs the question: from which egg did the first chicken emerge? If we are to assert that the chicken came first, then this raises the question. If, on the other hand, we propose that the egg comes before the chicken, then this raises the question of which chicken laid the egg in the first place. The contentious classification of eggs as either vegetarian or non-vegetarian is another interesting topic that is discussed in this mysterious debate. Let’s get started on a comprehensive investigation to figure out how to make sense of these enigmas.

The origin

The events of the story take place approximately 150 million years ago, when dinosaurs established their dominance over the planet. In the midst of this prehistoric period, which was characterised by a wide variety of dinosaur species, the journey of evolution of birds began. It was during this period of time that the first birds of the avian species took to the air. As opposed to following a linear path, evolution has diverged in a number of different directions. There were dinosaurs that shrunk and evolved into avian creatures, beginning the lineage of modern-day birds such as chickens. While some dinosaurs evolved into formidable predators such as the T-Rex, others shrunk and evolved into avian creatures. Particularly noteworthy is the evolutionary connection that exists between modern chickens and their formidable ancestors, such as the T-Rex. This connection exemplifies the various paths that evolution can take.

Egg Origins: A Prehistoric Timeline

Despite the fact that birds did not come into existence until much later, dinosaurs were already capable of laying eggs. Dinosaurs laid eggs that were comparable to those that are being laid by modern birds such as chickens and ostriches. This occurred even before the evolution of birds. Eggs are thought to have originated approximately 375 million years ago, when they were laid by an amphibious creature known as Tiktaalik Roseae for the first time. These ancient eggs, which were not like the chicken eggs that are used today, could be compared to fish eggs because they did not have a hard shell around them.

In the vicinity of 300 million years ago, eggs underwent a transformation that resulted in their current form, which is characterised by a tough outer shell similar to that of ordinary chicken eggs. To put this into perspective, the evolution of chickens in their current form occurred only 3,500 years ago. This is a striking contrast to the current state of affairs. Over the course of evolution, eggs have been around for millions of years before the chicken as we know it came into existence. This stark divergence in timelines highlights the entire evolutionary journey.

The Tale of Domestication

In Southeast Asia, around the year 1500 B.C., the cultivation of rice and millet brought about a change in the relationship between humans and a wild fowl that was a precursor to the chicken. This is known as the red jungle fowl. This wild bird, which resembled chickens in appearance but lived in jungle environments, gradually became domesticated over time. Its appearance was comparable to that of modern chickens. Over the course of millennia, human interaction and selective breeding had the effect of transforming this ancestor into the domestic chicken that we are familiar with today. It is remarkable that its remote ancestor, the species of jungle fowl known as Gallus Gallus, continues to flourish in the jungles of Southeast Asia, despite being subtly different from its domesticated counterpart.

This evolution reaffirms the significant time gap that exists between the two species: eggs have a lineage that dates back 300 million years, whereas chickens, in their current form, evolved only 3,500 years ago.

Unlocking the Mystery of the Chicken-Egg Paradox

The mystery of which came first, the chicken or its egg, is revealed in a sequence that sheds light on the stages of evolution. The modern chicken, which originated from the red jungle fowl, can trace its origins back to an ancestor that was similar to the proto-chicken. At a crucial point in their history, genetic mutations that occurred during reproduction resulted in the birth of the first true red jungle fowl from an egg. This event laid the groundwork for the first chicken to come into existence. Following that, the production of eggs by these evolved species led to the continuation of the chicken lineage through successive generations.

An unclear distinction is drawn by human classification, and the demarcation between what constitutes a “chicken” and its ancestral lineage brings this distinction into focus. The forces that drive evolution, which were previously investigated in the series on evolution, shed light on this constantly occurring transformation.

Gradual Evolution: An Intricate Journey

Within the context of this evolutionary narrative, the idea that there was a particular date that marked the birth of the first chicken is cast aside. On the contrary, it depicts a gradual progression, a continuum that is traversed through stages, generations, and incremental transformations. The idea of artificial selection, which is a topic that needs to be investigated further, sheds light on this gradual evolution.

Classifying Eggs: Vegetarian or Non-Vegetarian

Whether eggs are considered vegetarian or non-vegetarian, the classification of eggs reveals a complicated understanding. Eggs can be broken down into two primary categories: unfertilized haploid eggs, which are incapable of hatching, and fertilised diploid eggs, which are the result of mating and have the potential to hatch chicks. Embryogenesis, which is a process that occurs in some plant and animal species, allows for the development of embryos without the need for fertilisation. On the other hand, unfertilized eggs are not capable of hatching and are primarily consumed by chickens because they are not fertilised. This classification, which was upheld by the Supreme Court, considers these eggs to be vegetarian, devoid of life, and comparable to milk. This classification was based on the opinion of Mahatma Gandhi.

The Nutritional Bounty of Eggs

Eggs contain a wide variety of essential nutrients, such as protein, vitamins, minerals, and antioxidants, which contribute to their nutritional value. It is because of this nutritional bounty that eggs are considered to be a very beneficial addition to one’s diet. Egg consumption is being advocated by the government as a means of combating malnutrition, which highlights the nutritional significance of eggs.

Human Intervention and Artificial Selection

Resonating in the evolution of cultivated plants and animals is the juxtaposition of natural and artificial selection, which manifests itself across a wide range of domains. Through the use of artificial selection, human intervention has significantly increased egg production among modern chickens. This is a remarkable achievement.

Evolution Beyond Chickens and Eggs

This evolutionary saga extends beyond the realms of chickens and eggs, and it encompasses human interventions in breeding. These interventions are most prominently seen in the process of maximising milk yield in cows or cultivating particular characteristics in plants. A further illustration of the profound impact that human intervention has had is provided by the evolution of cultivated plants such as broccoli, cauliflower, and bananas through the process of artificial selection.

The Dawn of Agriculture

The story continues all the way up to the beginning of agriculture, with wheat serving as a prime example of the transformative impact that domestication has had on human societies for centuries. This profound contemplation delves into the ways in which the cultivation of wheat reimagined the human experience, leading to agricultural practices that brought about significant changes in both the environment and the way people lived their careers.

The Evolutionary Journey Continues

In conclusion, the chicken-or-egg paradox can be recast as a continuum of evolution, which is a reflection of gradual stages, the influence of artificial selection, and the intertwining of human influence in the process of shaping the species that surround us. This story develops into a complex web that not only encompasses the origins of chickens and eggs but also discusses the broader implications of human intervention and evolution across a variety of different domains of existence.

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What happened to other Human Species? | Evolution of Homo Ancestors


Through the study of human evolution, one can discover a fascinating journey through time, which involves investigating the lineage of our ancestors. Homo Habilis, Homo Erectus, and Homo Neanderthals are three important species that have a strong connection to the anatomical background of humans. Can you tell me what happened to these species? Do any of them still take place today? These ancestors play a significant role in the history of modern humans, also known as Homo sapiens. Nevertheless, the most important question remains: has the process of evolution in humans come to a halt, or do we continue to evolve? In this video, which is the second installment of the Theory of Evolution series, we delve into these inquiries and attempt to unravel the mysterious story of human history.

 From the Beginning of Life to the End of the Dinosaur Era

In the video that came before this one, I had the opportunity to travel through the history of life on Earth and investigate the various forms of life that appeared before. The story continued all the way up until the time when dinosaurs became extinct. As we move forward, let us continue our journey and reveal the story of the evolution of humanity.

The Great Apes represent the closest relatives.

The Great Apes, which include Chimpanzees, Gorillas, Orangutans, and Bonobos, are our closest living relatives, and we will begin our exploration with them. These apes, along with humans, are classified as Hominids because they share a number of characteristics, including the ability to walk on two legs and the types of blood groups they have.

How Hominoids and Anthropoids Are Related to One Another

When we take a step back in the evolutionary chain, we observe the emergence of hominoids, which include gibbons that share an astonishing 96% DNA similarity with humans. Extending further, Anthropoids appear, which are composed of a variety of monkeys and have characteristics that seem to be similar to humans.


The Primate category includes both Tarsiers and Lemurs, both of which have characteristics that are unique to them. The shy and nocturnal tarsiers are known for their extraordinary jumping abilities, while the Lemurs, which are native to Madagascar, carry the distinction of being the oldest living primates.

Understanding Evolution Through the Lens of a Tree with Many Branches

When evolution is compared to a tree, it can be seen as a tree that branches off into different categories. As we travel backward, we will find convergence points that reveal common ancestors, which will shed light on the relationship between modern-day animals and humans.

A Trip Through Hominins: Our Ancestral Lineage and Their Development

When we venture into the realm of Hominins, we come across a number of different species, one of which is Ardipithecus Ramidus, which was the extremely first species to exhibit bipedalism. Additional species, such as Australopithecus Afarensis, which is represented by the well-known fossil known as “Lucy,” displayed more advanced bipedal characteristics and the ability to use tools.

Between the time of Homo Habilis and Homo Erectus

The appearance of Homo Habilis, also referred to as “handyman,” demonstrated a significant advancement in the utilisation of tools and the scavenging of resources. The Homo erectus, also known as the “working man,” demonstrated significant advancements in the areas of hunting, toolmaking, and the utilisation of fire.

Homo sapiens: The rise of the Wise Man

The culmination of evolution is the species that we are, Homo sapiens, which demonstrates remarkable advancements in intelligence, creativity, and the development of society. The path that led to the development of modern Homo sapiens was paved by archaic Homo sapiens.

Extinct Cousins: Homo Neanderthals and Beyond

residing on Homo Neanderthals, Homo Denisovans, and Homo Floresiensis, which were species that coexisted with Homo Sapiens but fell victim to extinction in the long run. It is investigated how Homo Neanderthals overcame the obstacles that led to their eventual demise, as well as the genetic legacy that they left behind in modern humans.

Homo sapiens are still evolving in their species.

When considering the evolution of humans, contemporary evidence suggests that Homo sapiens continue to exhibit evolutionary characteristics. These characteristics are visible in the variation of skin colour and lactose tolerance across populations. The ongoing nature of human evolution is demonstrated by the evolutionary adaptations that have occurred in response to changes in the environment and in diet.

Secrets of the Ancestral Journey Beyond Humans

Taking a look back at the history of human evolution, it is essential to comprehend that our origins extend beyond primates. In order to gain a better understanding of the fascinating story of the evolution of life, it is necessary to investigate our relationship with vertebrates, mammals, and the last universal common ancestor, also known as LUCA.

A Journey of Epic Proportions: From Stardust to Life

Reflecting on the beginnings of life, beginning with the formation of stardust and progressing to the formation of our solar system and, ultimately, the beginning of the Earth, is a way to trace the story of the emergence of life. The journey from the smallest cell to complex organisms is illustrative of the great complexity that has been present throughout the evolution of life.


A captivating story is encapsulated in the process of human evolution, which is a complex tapestry that weaves through a wide variety of species and intricate characteristics. This narrative, which begins with the earliest forms of life and ends with Homo sapiens, offers a glimpse into an evolutionary journey that is rich in resiliency, adaptation, and continuity.