Scientists reveal whether the chicken or the egg came first

#chicken #egg #debate
For centuries, the question of which came first, the chicken or the egg, has puzzled scientists and philosophers alike. However, a team of researchers from the UK have recently provided an answer to this age-old conundrum.

According to their study, published in the journal "Nature Scientific Reports," the answer lies in the protein sequence of a key component of eggshells called ovocledidin-17 (OC-17). The researchers analyzed the DNA sequence that codes for OC-17 and found that it can only be produced in the ovaries of chickens. Therefore, the conclusion was that the chicken must have come first in order to produce the egg that contained the first chicken.

This finding was made possible through advanced techniques that allowed the researchers to examine the protein sequences of eggshells from different bird species, including emus and ostriches, which are evolutionary ancestors of chickens. By comparing these sequences, they were able to determine when the genetic mutation occurred that allowed for the production of OC-17 and, therefore, the formation of hard-shelled eggs.

The study is not only an interesting answer to a long-standing question, but it also sheds light on the evolution of birds and how they developed the ability to lay hard-shelled eggs. It is also an example of how modern scientific techniques can help to solve longstanding mysteries.

Overall, the study provides a definitive answer to the chicken-and-egg question, and opens up new avenues for research into the evolution of birds and the genetic basis of eggshell formation.

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