The Virus Myxoma Was Introduced into Australia to Try to Limit

question 34

Multiple Choice

The virus myxoma was introduced into Australia to try to limit a population explosion of rabbits introduced from Europe. Did it work?

• A) Yes, the virus killed 99% of the rabbits almost immediately.
• B) Yes, the virus killed 99% of the rabbits initially and then kept the population down at manageable levels.
• C) No. At first it did, but then the rabbits evolved to be resistant, and now it doesn't work at all.
• D) Yes. At first it worked, but then only resistant rabbits were left, so the virus changed to become less virulent. That allows the virus to be more easily spread though, so the rabbit populations are still somewhat controlled.
• E) No. The virus almost immediately became less virulent such that it spreads more easily but it doesn't kill the rabbits.

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