Wiktionary
a. Causing deterioration.
Usage examples of "deteriorative".
Afterwards, geneticists had wryly demonstrated that —since each racial group was so small that unless their descendants intermarried, each would undergo deteriorative genetic drift due to inbreeding on the colony planet—the racists had made cross-breeding necessary to survival.
Afterwards, geneticists had wryly demonstrated that-- since each racial group was so small that unless their descendents intermarried, each would undergo deteriorative genetic drift due to inbreeding on the colony planet--the racists had made crossbreeding necessary to survival.
Afterwards, geneticists had wryly demonstrated that–since each racial group was so small that unless their descendants intermarried, each would undergo deteriorative genetic drift due to inbreeding on the colony planet–the racists had made cross-breeding necessary to survival.