How is DNA used as evidence for evolution?

DNA and the genetic code reflect the shared ancestry of life. DNA comparisons can show how related species are. Biogeography. The global distribution of organisms and the unique features of island species reflect evolution and geological change.

How does a comparison of the bone structures of the two animals provide evidence of an evolutionary relationship?

Both provide evidence for evolution. Homologous structures are structures that are similar in related organisms because they were inherited from a common ancestor. These structures may or may not have the same function in the descendants. The forelimbs of all mammals have the same basic bone structure.

How does molecular biology provide evidence for evolution?

Molecular similarities provide evidence for the shared ancestry of life. DNA sequence comparisons can show how different species are related. Fossils provide evidence of long-term evolutionary changes, documenting the past existence of species that are now extinct.

Which animal DNA is closest to humans?

chimpanzees
Ever since researchers sequenced the chimp genome in 2005, they have known that humans share about 99\% of our DNA with chimpanzees, making them our closest living relatives.

Why do humans dogs and birds all have similar bones in their forelimbs and hands?

The forelimbs of all mammals have the same basic bone structure. The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor. For example, the wings of bats and birds, shown in Figure below, look similar on the outside.

Are the parts of the bone arranged in a similar way in each animal?

Are the bones arranged in a similar way in each animal? These structures are formed in similar ways during embryonic development and share like arrangements; however, they have somewhat different forms and functions. They are called homologous structures.