Packet 11: Tossup 4

The Sleeping Beauty transposon system was discovered in this family of vertebrates. These non-marsupial animals display a prototypical example of phenoptosis (“fee-nop-TOH-sis”), the programmed death of an organism. All Pacific species of these animals are semelparous and may develop humps before breeding. Commercially cultivated examples of these animals are fed astaxanthin to mimic the natural (*) color of their meat. (10[1])These animals’ Chinook and sockeye species are among those that engage in namesake “runs.” These animals are often eaten by grizzly bears while swimming upstream to spawn. For 10 points, name this family of pink-fleshed fish. ■END■

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