mutation of genes hybridization of species extinction of populations alteration of the environment
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: Evidence suggests that there is a relationship between ancient dinosaurs and modern birds. Through time, each occurrence of a new trait most likely resulted from which of the following?
Possibilities:
- mutation of genes
- hybridization of species
- extinction of populations
- alteration of the environment

mutation of genes