Who can say??????????
who comes first?? EGG or HEN.
Put simply, the reason is down to the fact that genetic material does not change during an animal's life.
Therefore the first bird that evolved into what we would call a chicken, probably in prehistoric times, must have first existed as an embryo inside an egg.
Professor John Brookfield, a specialist in evolutionary genetics at the University of Nottingham, told the UK Press Association the pecking order was clear.
The living organism inside the eggshell would have had the same DNA as the chicken it would develop into, he said.
importance of the question has faded since Darwin's On the Origin of Species and the accompanying
Theory of Evolution, under which the egg must have come first, assuming the question intended the
egg to mean an egg in general or an egg that hatches into a chicken.
Evolution states that species change over time via mutation and selection. Since DNA can be modified
only before birth, a mutation must have taken place at conception or within an egg such that an
animal similar to a chicken, but not a chicken, laid the first chicken egg. In this light, both the
egg and the chicken evolved simultaneously from birds who weren't chickens and didn't lay chicken
eggs but gradually became more and more like chickens over time.
However, a mutation in one individual is not normally considered a new species. A speciation event
involves the separation of one population from its parent po ...more
It is all in the system of evolution