Question

21. The ____________ of animals is based on scientists’ current understanding of the evolutionary history of living species. (1 point)

Answer 1

Answer:

The given blank can be filled with cladogram.

Explanation:

A cladogram refers to a diagram utilized by the researchers to demonstrate a phylogeny, which is considered as a hypothetical association between the groups of animals. It demonstrates groups of organisms, that is, how they are interrelated and associated with their common ancestors.  

Thus, the cladogram of animals is dependent upon scientists’ present understanding of the evolutionary history of living species.  

Answer 2

The homology of animals is based on scientists current understanding on the evolutionary history of living species.