Because genetic alteration build up naturally within any species over time, at a rate that can be estimated, comparing parallel DNA sequences yields an instant photograph of genetic closeness and distance.
My book interprets 'an photograph' above literally as 'an photo taken by a camera', but is it really so? I thought the underlined part meant somethig like: 'When we compare parallel DNA sequence, we can see genetic closeness and distance easily'. So I thought 'photograph' here was a metaphor for 'image'.
Am I wrong?
Top answer
No. You are not wrong. 'photograph' is a metaphor for 'image' in that context.
— CalifJim
No.
You are not wrong.
'photograph' is a metaphor for 'image' in that context.
CJ
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