For the Mytilus phenomenon look at
Zouros,Eleftherios, Freeman, K. R., Oberhauser Ball, A., Pogson, G. H. 1992.
Direct evidence for extensive paternal mitochondrial DNA inheritance in the
marine mussel Mytilus. Nature 359:412-414
Skibinski, D. O., Gallagher, C., Beynon, C. M. 1994. Sex-limited
mitochondrial DNA transmission in the marine mussel Mytilus edulis. Genetics
and papers in MBE by Zouros' group (Walter Hoeh, Donald Stewart and others)
The male and female mytilus inherit mtDNA from both parents, but then
development in either sex leads to a dominance of one mtDNA haplotype per
sex. In Mice and Drosophila, the observed mtDNA heteroplasmy is attributed
to "leaky" sperm, quite a different situation than Mytilus (assuming I'm
remembering all this correctly, it's been awhile since I read all this
mblack at virginia.edu
> From: Mike Syvanen <syvanen at ucdavis.edu>
> Organization: BIOSCI/MRC Human Genome Mapping Project Resource Centre
> Newsgroups: bionet.molbio.evolution
> Date: 18 Oct 2000 19:28:48 +0100
> Subject: Re: mtDNA in the Metazoa
>>>> John Harshman wrote:
>>> In article <8s8hc7$j9i$1 at mercury.hgmp.mrc.ac.uk>, Andrew Gyles
>> <syzygium at alphalink.com.au> wrote:
>>>>> Is exclusively maternal inheritance of mtDNA universal in the Metazoa?
>>>>>>> No. For example, in Mytilus (mussels), male mussels inherit mitochondria
>> exclusively from their fathers, and females from their mothers. Weird,
>>>> *Note the obvious spam-defeating modification
>> to my address if you reply by email.
>> There was a report about 10 years ago that there is some paternal
> mtDNA inheritance in mice (1991, nature 352:255) and Drosophila
> (1990, genetics 126:657). I do not know if these examples are still
> generally accepted.
>> Mike Syvanen