Difference between biogeographic distribution and convergent evolution

Answer and Explanation:

Biogeographic distribution is the large-scale geographic pattern in the distribution of species, and the causes and history of this distribution. The evolution of analogous structures is called convergent evolution which occurs due to different organisms exploiting the same environment.

The ancestors of modern mammals arose in the northern hemisphere and migrated in three major directions before the drift. Separation of the continents isolated the animals bringing about different patterns of evolution.