The convergent evolution may cause the arising of the similar traits in distantly related species. These traits may arise due to the demands during the course of evolution, the reason for having a different origin may be that it was not required initially, but required later. The bones of the birds and the bat are homologous in structure, but the origin of the wings are different.
So, these characters represent a type of convergent evolution.
I think it's uuaacg since the t isn't in the mRNA strand. So in the mRNA strand as and a,u,c,g DNA strand as a,t,c,g!
I believe they are the third trophic level. Please tell me if i'm wrong!