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Evolutionists determine that two organisms have a common ancestor is by looking at fossil evidence in different rock layers using the law of Superposition (Oldest layers are on the bottom, newest are on the top) and compare the skulls or other bones to each other in order of oldest to newest (or newest to oldest). Another way to determine this is to examine the amount of DNA a certain species shares with another species. An example of this would be that Humans share roughly 90% of our DNA with chimpanzees or the other Great Apes.
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What are clades A clade is a group of organisms consisting of a common ancestor and all its descendants But doesn't every living thing have a common ancestor Please help Thanks?
Yes, all living things are just groups of organisms consisting of common ancestors and all their decendant's. Clades is just a word that means a group of organisms.
What does it mean for species to have an evolutionary relationship?
If two organisms share an evolutionary relationship, that means that they have a common ancestor on the evolutionary tree. The more recently the shared common ancestor lived, the more closely related the two present organisms are, evolutionarily.
Do organisms evolve slowly over time and can two different organisms have a common ancestor?
Yes they evolve slowly over time and a panda and raccoon have common ancestors.
What is the mating of two closely related individuals?
Organisms sharing a common ancestor are of common descent. The LUA , the last universal ancestor, lived 3.9 billion years ago.
Humans and gorillas have one different amino acid in their hemoglobin sequence. What does this say about the evolution of these two species?
Answer this question… They probably have a recent common ancestor.
