Firstly I could do with a brief description of mitochondrial DNA. How does the structure of DNA in mitochondria compare to animal DNA (for the sake of simplicity let's say human - some animals might have unusual DNA structure) and what living organism is the mitochondrial genome most akin to? (Circular like bacteria maybe?) and are the mitochondria within a single human homogenous?
Secondly, and most importantly to my aim, does the mitochondrial genome recombine in anyway? Is the process of recombination affected by its structure? Are there any patterns/rules in mitochondrial recombination? Is there DNA transfer between mitochondria which could have a similar effect?
I am trying to think about how male deleterious alleles can spread differently in diverged populations given potential recombination to female beneficial (or recombination away from female deleterious mutations).