Which environmental factor could lead to a decrease in genetic variation in a population of tuna?
Answer :
A. an increase in food availability
B. a decrease in tuna fishing
C. an increase in pollution
D. a decrease in tuna predators
Correct Answer: C. an increase in pollution
"An increase in pollution" may cause a population of tuna to become less genetically varied.
The genetic diversity of the tuna population is declining as a result of increased contamination.
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