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Which Came First, The Chicken Or The Egg? Scientists Finally Have The Answer
Yahoo • • science
Key Points:
- The question of whether the chicken or the egg came first has puzzled thinkers for centuries, but evolutionary research provides a clear answer.
- Egg-laying animals appeared around 540 million years ago, long before chickens or birds existed, indicating that eggs predate chickens by a significant margin.
- The first true chicken emerged from an egg laid by two birds that were not quite chickens, due to genetic mutations accumulated over generations.
- Eggs as a biological structure originated well before birds, with reptiles, dinosaurs, and fish laying eggs millions of years earlier, supported by molecular evidence in primitive organisms.
- This evolutionary perspective reframes the classic paradox, showing that the egg, as a protective environment for developing embryos, came first in the history of life.
