What is a evidence tree to show the source of evidence .
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Any trait that can be passed from one generation to the next through inheritance can help us learn about evolutionary relationships. These traits include:
DNA and RNA sequences (as well as other moleculartraits like the amino acid sequences of proteins).Because DNA technology is now widely available, relatively inexpensive, and generates a lot of useful evidence, many evolutionary trees being built today are based on DNA sequences. In recent years, many branching connections on the Tree of Life (including where turtles fit on the Tree, how whales are related to other mammals, and the basic relationships among plants, fungi, and animals) have been revised based on DNA evidence.

The nucleotide sequence of DNA can help us reconstruct evolutionary trees.
Morphology (i.e., structure and form). Morphology includes all sorts of physical traits that may be encoded in an organism's genetic material — the size and shape of different body parts, the presence or absence of different physical characteristics, coloration, pattern, and much more. Before 1980, most evolutionary trees were based on morphology alone; today, trees based on DNA alone or a combination of DNA and morphology are much more common. Nevertheless, morphology still has an important role in phylogenetics, in no small part because DNA is usually unavailable for extinctspecies and because fossils preserve many aspects of morphology. Morphology is often the sole line of evidence that can help us learn how ancient life is related to modern species.

DNA and RNA sequences (as well as other moleculartraits like the amino acid sequences of proteins).Because DNA technology is now widely available, relatively inexpensive, and generates a lot of useful evidence, many evolutionary trees being built today are based on DNA sequences. In recent years, many branching connections on the Tree of Life (including where turtles fit on the Tree, how whales are related to other mammals, and the basic relationships among plants, fungi, and animals) have been revised based on DNA evidence.

The nucleotide sequence of DNA can help us reconstruct evolutionary trees.
Morphology (i.e., structure and form). Morphology includes all sorts of physical traits that may be encoded in an organism's genetic material — the size and shape of different body parts, the presence or absence of different physical characteristics, coloration, pattern, and much more. Before 1980, most evolutionary trees were based on morphology alone; today, trees based on DNA alone or a combination of DNA and morphology are much more common. Nevertheless, morphology still has an important role in phylogenetics, in no small part because DNA is usually unavailable for extinctspecies and because fossils preserve many aspects of morphology. Morphology is often the sole line of evidence that can help us learn how ancient life is related to modern species.

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