Due to Various Causes,including DDT Poisoning,the Population Size of Whooping

question 31

Multiple Choice

Due to various causes,including DDT poisoning,the population size of whooping cranes was reduced to about two dozen during the 1940s.The population size has since rebounded,and there are now hundreds of whooping cranes.Which would you not expect to see in the current populations of whooping cranes?

• A) Very low levels of genetic variation
• B) Very few heterozygous individuals
• C) Allele frequencies different from those of historical populations
• D) Considerable genetic polymorphism
• E) Genotypic frequencies different from those of historical populations

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