Complex sentence: An example of a paternal-effect gene is the ms (3) sneaky in "Drosophila", males with a mutant allele of this gene produce sperm that are able to fertilize an egg, but the snky-inseminated eggs do not develop normally.
Split into simpler sentences: An example of a paternal-effect gene is the ms (3) sneaky in "Drosophila". Males with a mutant allele of this gene produce sperm that are able to fertilize an egg, but the snky-inseminated eggs do not develop normally.