The
zebrafish lineage is the studied gene who evolved most rapidly as shown in its
branch where it manifest to have the longest lineages.<span> The changing branch lengths indicates
that the gene has evolved at different rates in each lineages and the branch length
is proportional to amount of the genetic variation in each linear.</span>
<span>The nutrient in question has an exhausted supply due to which cellular growth is limited. Usually nutrient limitation which limits productivity consist of such essential nutrients which are required by organisms in that environment to survive and grow.
Hope i helped.</span>
