in 2010, a new type of life form was found in california's lake mono. the microbe found has a variation in the structure of its dna. dna is known to consist of nucleotides. in the newly discovered bacteria, it was hypothesized that arsenic is substituted for phosphorus when phosphorus is not present. if true, by substituting arsenic for phosphorous, the microbe would have
a) a different sugar.
b) a different nucleotide.
c) a different phosphate .
d) a different nitrogen base.
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