¿El huevo o la gallina?

En CNN informan que primero fue el huevo. Y parece haber concenso y razones científicas concretas que lo respaldan:

"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."

¿Dilema resuelto?