Since the DNA is damaged, the RNA created from it will not be correct. So after protein synthesis the protein will come out with a messed up shape. A change in the shape means a change of the function for a protein. So, In the end, the protein would not function as intended.
Explanation: One of the highest probabilities is because of the bird in the front (the one in the point of the v) takes the command in leading to others in the flock to there location which explains for that as in there is no new members of there flock doing so.
Another reason could be is air resistances and helps the flock fly.
one of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.Also called allelomorph.