What came first; the chicken or the egg?

Answer 1

The chicken or the egg is a reference to the causality dilemma which arises from the expression "which came first, the chicken or the egg?". Since both the chicken and the egg create the other in certain circumstances (a chicken emerges from an egg; an egg is laid by a chicken) it is ambiguous which originally gave rise to the other. Purely logical attempts to resolve the dilemma result in an infinite regress, since an egg was caused by a chicken, which was caused by an egg, etc. Since every chicken originates from its egg, it seems obvious the egg came first. Put simply, the reason is down to the fact that genetic material does not change during an animal's life. The solution may require an examination of syntax and may rely on verification from advances in modern genetic science. When used in reference to difficult problems of causality, the chicken and egg dilemma is often used to appeal to the futility of debate and lay it to rest.

History of the problem

The earliest reference to the dilemma is found in Plutarch's Moralia, in the books titled "Table Talk," in a series of arguments based on questions posed in a symposium. Under the section entitled, "Whether the hen or the egg came first," the discussion is introduced in such a way as to suggest that the origin of the dilemma was even older:

"...the problem about the egg and the hen, which of them came first, was dragged into our talk, a difficult problem which gives investigators much trouble. And Sulla my comrade said that with a small problem, as with a tool, we were rocking loose a great and heavy one, that of the creation of the world..."

Various answers have been formulated in response to the question, many of them humorous.

Answer 2

From a cellular biology point of view this question can be answered quite easily. The egg came first because any female sex cell is called an egg.

If the egg is defined structurally as the hard shelled thing, and the chicken a feather covered animal, the answer is still simple. Evolutionary scientists believe the first hard shell egg was the amniotic egg laid around 300 million years ago, and was laid by the animal who was the link between amphibians and reptiles. One of the first dinosaurs that we know had feathers was the Archaeopteryx, and came much later. Modern birds would not arise until 150 million years ago, descending from theropod dinosaurs.

In this case, the first chicken must have been the mutated offspring of a proto-chicken that laid the egg containing the first true chicken. In any case, this creature hatched from a recognizable egg. After all, the question is purposefully ambiguous -- it is not, "Which came first, the chicken or the chicken egg?"

The crux of the matter is how to biologically define 'a chicken'. What level of genetic similarity or structural similarity determine whether an organism is a chicken? One can only define what was the first chicken after the fact, thus any definition of the first chicken becomes arbitrary. The question 'which came first?' ignores the complicated reality of speciation. The concept of species is an abstraction intended to categorize a broad swath of genomes and their subsequent phenomes. If one were to do away with approximate categories, each individual 'chicken' actually represents a unique genotype. Under this definition, if a 'chicken' possessing genome A were to lay an egg possessing genome B, then an egg of genome B is antecedent to an animal possessing genome B and that the parent--genome A--is antecedent to, yet different from the egg of genome B. Hence, in an absolute sense, the egg came before the 'chicken.'

According to the principles of speciation, neither the chicken nor the egg came first, because speciation does not occur in simple, obvious units. In fact, evolution is about a slow transition in an overall population. What qualifies as “chicken” (ignoring the many diverse modern types of chicken) involves a wide range of genetic traits (alleles) that are not encompassed in a single individual and continue to be modified from generation to generation.

The transition from non-chicken to chicken is a grey area in which several generations are involved, and therefore which includes many many chicken-and-egg events, with no one step representing the whole. Since the result of the process is an incomplete transition into various new characteristics rather than one single blueprint, a new species, "chicken", is only identified in hindsight when the species can be obviously identified as different from its ancestral stock.

Answer 3

The egg was first. You can get eggs from things that are not chickens (like other birds, reptiles etc), but you can't get a chicken until you have an egg. Some poor crocodile laid an egg one day, thinking she'd get a baby croc, and ended up with a fluffy little baby chicken!

Answer 4

According to Aristotle, actuality takes precedence over (comes first before) potentiality. Eggs become chickens, chickens do not become eggs (they lay eggs, they don’t become eggs). Therefore an egg is a chicken in potentiality, but a chicken is a chicken in actuality. Therefore the chicken came first.

Answer 5

The egg

Answer 6

The egg of an animal similar to a chicken had a genetic defect and hatched as a chicken.

Answer 7

The chicken. Something had to lay the egg.

Answer 8

Well if you believe the bible then it was the chicken -

"And the evening and the morning were the fourth day. And God said, 'Let the waters bring forth abundantly the moving creature that hath life, and fowl that may fly above the earth in the open firmament of heaven'." Genesis 1:19-20. Chickens are a type of fowl, so the Christian Bible says that chickens came first.

Answer 9

Egg, chickens can't change their DNA structure but an egg can. so the egg of something else evolved into a chicken. scientists announced this earlier this year actually

Answer 10

the chicken and the egg are in bed together, the chicken looks at the egg who has a big grin on his face and smoking a cigarette. the chicken grumbles "well i guess we finally know the answer to that question!" so there you go.