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

Question

Quizplus · Accepted Answer

Considering the population bottleneck the whooping cranes passed through, it is expected that their genetic variation and allelic frequencies will have drastically reduced. Thus, options A, B, C, and E are likely. However, option D- considerable genetic polymorphism- is less likely since polymorphism refers to the existence of multiple alleles at a locus, and given their history, it is less probable that the whooping cranes would have gone through such a phase.

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