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Why everyone has different DNA ?

As My knowledge We are from simple one cell amiba animal . So why everyone has different dna ?
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Categories: Domestic Science.

Tags: science, DNA.

 

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What happens to a blood donor's DNA when his blood is transfused to a recipient?
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Categories: Human Body.

Tags: DNA.

 

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What happens to a blood donor's DNA when his blood is tranfused to a recipient?
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Categories: Human Body.

Tags: DNA.

 

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Why has life only arisen once on earth?

Is there any evidence of life having arisen more than once on Earth? Why is all life related to a common ancestor, surely if it happened once it could happen more than once? Given that the Earth is the only place we know for certain that life exists is there any evidence for life having arisen independently more than once?
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  • Asked by Sherring
  • on 2010-01-06 09:23:15
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Last edited on: 2010-02-12 05:03:20

Categories: Planet Earth.

Tags: Life, Biology, DNA, Astrobiology.

 

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loss of genetic diversity in human population

The human genoproject has demonstrated that the global population of humans can trace its roots to Africa. Given we're all linked to the same ancestory are we less genetically diverse than our African ancestors. ie over 200,000 years how much new mutation would have been added to our dna and how much would we have lost due to inbreeding in what is suspected to be small migratory groups out of africa.
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  • Asked by bward
  • on 2009-12-13 13:07:11
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Last edited on: 2010-02-22 14:16:54

Categories: Human Body.

Tags: humanbody, human, genetics, DNA, humandna, Diversity, Genone.

 

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Mitochondrial DNA analysis, indicates that all human race came from a single woman that existed about 140,000 years ago.

Does the Neanderthal has a different ancestor? And where they came from?
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  • Asked by lvarelaa
  • on 2009-11-03 00:25:49
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Last edited on: 2009-11-10 21:21:08

Categories: Unanswered.

Tags: human, DNA, ancestry, Neanderthal, Cromagnon.

 

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6 matches found

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