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Which best explains why there are 64 possible codons in the genetic code and only 20 amino acids that make protiens of living organisms on earth
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Which of the following is not a symptom of desertification? a) decrease in salt content of the soil b) lowering of the water table c) reduced surface water d) increased soil erosion e) loss of native vegetation
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Biology, 22.06.2019 10:30
Natural selection changes allele frequencies because some survive and reproduce more successfully than others.
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Akaryotype shows dna in its chromatin form true or false?...
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