In the ancestors of whales, the pelvis and femur, or hindlimb, were involved 1 point with walking on solid ground. In modern whales, the pelvis and femur
shown in below are now... *

The options are: example of fossils
acquired traits
examples of natural variation
homologous structures
analogous structures
vestigial structures

(help is appreciated

his research revealed two genetically different groups of prokaryotes, which justified splitting kingdom monera into two kingdoms. the genetic and cellular differences were so great, that these two kingdoms were eventually placed into different domains in the current three-domain system.

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