Question

9. Before European settlement, it is estimated that there were more than 10,000 whooping cranes in North America. Whooping cranes are now an endangered species, and in 1941, the population only contained 15 individuals. Since then, the whooping crane population has rebounded considerably, now numbering over 400 individuals. Based on what you know about evolutionary processes, select all of the following statements that are accurate. Most new mutations in the whooping crane population are advantageous. The whooping crane population has less genetic variation now than it did in before European settlement. The whooping crane population likely has substantial genetic variation. The whooping crane population underwent a population bottleneck in the 1940s.

Answer 1

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