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All species have the same genetic code.

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13y ago
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13y ago

Think of it this way. We can use DNA to determine the relationships among a family (fathers, mothers, uncles, aunts, etc). This works because DNA holds clues to the ancestors of the organism it is in. So we can use DNA to determine how long ago two different species, or even families, etc had the same ancestor. So it's just like a regular DNA test, but scientists look at the relationship between species, not just individuals.

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6y ago

DNA is a long strand of nucleotides which form the genes that make up chromosomes. Scientists compare DNA from living organisms to identify similarities among species. The best explanation for many of the similarities we find is evolutionary common ancestry.

For example, the L-gulonolactone oxidase (GULO) gene is broken in both humans and old world primates. Evolution explains why the break is similar between us and all other platyrhinne, whereas in almost all other mammals the gene works just fine. The gene broke in some early primate ancestor, and because our diet has long been rich in ascorbic acid, this defect was never selected against, but instead became inherited among all descendant species.

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12y ago

All species use the same genetic code - A, T, C and G, the four bases used as ´letters´ in the genetic ´book´. This couldn´t have come to be independently, there was a single ancestor who passed the code on to all of us alive today through our ancestors tracing back to the first one.

Also DNA mutates over time, changing its code so it can code for different things in the plan of an organism. It does so slightly, so all species that ever existed slowly morphed into eachother. In the grand sweep of it, fish morphed into amphibians, amphibians into reptiles and so on. This didn´t happen between individuals - a fish didn´t give birth to an amphibian. It happened very slowly, and all thanks to the slow, slight mutation of DNA over time.

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10y ago

banders are provided by dna

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Q: How is DNA used as evidence for evolution?
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Related questions

How is DNA evidence used in evolution?

All species have the same genetic code.


What is the biochemical evidence that supports evolution?

DNA


How is DNA used as evidence of evolution?

All living things have DNA -- both coding and non-coding DNA. The percentage of similarity between living things matches up with the preexisting theory of evolution.


What is the biochemical evidence that supports biological evolution?

DNA


Why is DNA the weakest evidence of evolution?

Actually, it is the strongest evidence for evolution. Without one fossil we would know from the DNA evidence that evolution has occurred and is occurring. It is in the DNA of organisms that we see the strongest evidence for common ancestry. The products of those genes are sometimes highly conserved down the ages. Ribosomes, the workbenches on which proteins are made, differ hardly at at between you and pets.


What are types of evidence that suggest that evolution has occurred?

The two types are Dna, and fossils


What are two types of evidence that suggest that evolution has occurred?

The two types are Dna, and fossils


What two types of evidence that suggest that evolution has occurred?

The two types are Dna, and fossils


Where we apes?

The theory says we may have been because of evolution evidence and close DNA


What is indirect evidence?

Indirect Evidence of Evolution - is looking for signs of the results of evolution. - is evidence that can be used to deduce what you are trying to understand.


How is evidence from DNA useful in understanding the evolution of species?

DNA molecules contain the assembly instructions for every living creature. Scientists compare DNA from ancient and present creatures to identify genetic similarities among species. The genetic similarities among species is the main evidence of evolution theory.


List of reasons why evolution is true?

There is strong evolutionary evidence by people such as Darwin.There is evidence in our biological structures ie: bones and DNA in particular.Although evolution (the theory) is debated there is very strong evidence (look at Darwins books and research)