Question

I have a doubt,wheather hen came first or egg came first?

Answer 1

The video calls it a proto-chicken. So proto-hen laid an egg, and proto-rooster fertilized it. ... So in a nutshell (or an eggshell, if you like), two birds that weren't really chickens created a chicken egg, and hence, we have an answer: The egg came first, and then it hatched a chicken.

Answer 2

the protein which is found and is one of the mist important constitute im the formation of eggs is found in hens so by that logic hens came first but many scientists have different views point so it is difficult to say who came first hen or egg