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There is lots of evidence for a common ancestor but I suggest you look at wikipedia's evidence for common descent or Talk origins 29 evidence for evolution.
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∙ 13y ago
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The fact that all organisms have DNA as their genetic material is evidence that?
We all current life has a single common ancestor.
The occurrence of the same blood protein in a group of species provides evidence that these species?
descended from a common ancestor
What evidence do we have of evolution?
Evidence of common descent of living organisms has been discovered by scientists researching in a variety of disciplines over many decades, demonstrating that all life on Earth comes from a single ancestor.
What does a branch point in a cladogram represent?
The branch point in a cladogram represents a specific ancestor that is separated into two or more species. For example a leopard and a house cat share a common ancestor. A similar example is that a wolf shares a common ancestor with the leopard's and house cat's ancestor but the wolf's ancestor lived longer than the leopard's and house cat's ancestor. Scientists use something called cladistics to determine the one common ancestor that multiple species have in common.
How would you know if organisms shared a common ancestor?
The closer the DNA pattern (the nucleotide base pairing), the closer the species from a common ancestor.
Do dragons and vampires share a common ancestor?
There has been no evidence of such an ancestor.
What is the evidence which shows that mollusks and annelids share a common ancestor?
Mollusks and segmented worms have a one-way digestive system, a separate mouth and anus, and their larvae are very similar. This is the best evidence that they have a common ancestor.
The fact that all organisms have DNA as their genetic material is evidence that?
We all current life has a single common ancestor.
What evidence shows that the kingdom Protista have a common ancestor with plants?
Many protista contain chloroplasts.
Examples of biochemical evidence of evolution?
Physiological similarities suggest the species evolved from the same ancestor.
What are 2 types of structural evidence?
Evidence that tells that, through the structures of two organisms, can be compared that we have a common ancestor and have evolved from them.
The occurrence of the same blood protein in a group of species provides evidence that these species?
descended from a common ancestor
What is an explanation of why bird wings and reptile forelegs are evidence of evolution?
Homologous structures indicate a common ancestor
Darwin's claim that all of life descended from a common ancestor is best supported with evidence from?
molecular biology
Describe three kinds of evidence suggesting that all primates might have shared a common ancestor?
Rape
Similarity of structure of the forelimb of a bird and a mammal is an example of what evidence?
Homologous structures - the forelimb structures are anatomically similar and were derived from a common ancestor; however, they have evolved completely different uses. This provides evidence for divergent evolution or adaptive radiation.
What evidence can be used to show that organisms share a common ancestor?
The DNA genetic code provides the best evidence of the common ancestry of life. Science has shown that there are many similarities between DNA sequences.
