True b. False 32. Applying the biological species concept to this situation, one would conclude that lions and tigers are, in fact, the same species. True b. False 34. Hawaiian c. Galapagos d. Drift is most important in small populations.
Drift tends to maintain or even increase genetic variation within individual populations.
Drift operating in a series of populations will cause them to diverge. The direction and magnitude of changes due to drift cannot be accurately predicted. All of the above are true about genetic drift. Five breeding pairs of rabbits are introduced from the U.S. onto an isolated island in the Pacific Ocean. It is determined that allele frequencies at a number of genes for the island population are very different from those in the mainland population.