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Biology I student forgot to label three different sample tubes that contained human, single- corona virus, and single-strande

sample 1 is dna vir sample 2 rna vir am i in the right path

you have to name the sample

10. A Principles of Biology I student forgot to label three different sample tubes that contained human, single- stranded RNA
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Sample 1 is human DNA.Because as per Chargaff's rule in a double stranded DNA the number of purines is equal to number of pyrimidines( ie amount of guanine=cytosine and amount of adenine=thymine).Sample 1 satisfies this rule.

Sample 2 is single stranded RNA of corona virus because in RNA uracil is present instead of thymine.In sample 2 we can see that amount of thymine is zero.

Sample 3 is single stranded DNA of phi x 174.Because in ssDNA there is no Chargaff's rule.

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