The limbs of animals such as whales,cats,bats,and humans contain the same set of bones organized in similar ways yet have dissimilar functions.These structures are said to be:

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Homologous structures refer to structures that have the same evolutionary origin and basic structure, but may have different functions. The examples given in the question - limbs of whales, cats, bats, and humans - are all homologous structures because they share the same set of bones organized in similar ways, but have adapted to serve different purposes. Vestigial structures are remnants of structures that were functional in ancestral species but have lost their original use in the course of evolution. Morphological traits refer to any aspect of an organism's physical form, while polygenic traits involve the interaction of multiple genes to produce a particular characteristic.

The Limbs of Animals Such as Whales,cats,bats,and Humans Contain the Same