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Sergeu [11.5K]
3 years ago
7

What are two methods scientists use to determine the evolutionary history of a species?

Biology
1 answer:
hammer [34]3 years ago
3 0

Scientists compare the number of similarities/differences in amino acid sequences/DNA, structures in organisms (ie.Vestigial structures) and fossils

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Why did Holmes say to Watson, “My dear doctor, this is a time for observation, not talk.”?
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Holmes said to Watson "My dear doctor, this is a time for observation, not talk, because it was part of his method to observe closely and then to consider his observations. The correct answer is A. 
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suppose you are studying a fruit fly's DNA and you discover a gene for antenna length on chromosome 2. what word describes its l
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Answer:

<h2>In all flies,on the same Locus, on chromosome 2 at the same place you find the gene for antenna length.</h2>

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In all fruit flies ,on the same  Locus, on chromosome 2 at the same place you find the gene for antenna length

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A gene for antenna length in all fruit flies on chromosome 2 is present on same the location.

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