catastrophic evolution (catastrophic speciation) A theory proposing that environmental stress might lead to the sudden rearrangement of chromosomes, which in self-fertilizing organisms may then give rise sympatrically to a new species. Probably this explanation applies only to some special cases.

catastrophic evolution (catastrophic speciation) A theory proposing that environmental stress might lead to the sudden rearrangement of chromosomes, which in self-fertilizing organisms may then give rise sympatrically to a new species. Recent research suggests that at best this explanation applies to some special cases.

catastrophic evolution (catastrophic speciation) Theory proposing that environmental stress can lead to the sudden re-arrangement of chromosomes, which in self-fertilizing organisms may then give rise sympatrically to a new species (see SYMPATRIC EVOLUTION). Recent research suggests that at best this explanation applies only to some special cases.

catastrophic evolution(catastrophic speciation) A theory proposing that environmental stress might lead to the sudden rearrangement of chromosomes, which in self-fertilizing organisms may then give rise sympatrically to a new species. Recent research suggests that at best this explanation applies only to some special cases.