This function takes a RNA sequence as input and returns its DNA transcript.
     
    
    
    Arguments
    - sequence
 
A character string representing a RNA sequence.
 
 
    
    Value
    
A character string representing the RNA transcript of the input RNA sequence.
     
    
    Examples
    sequence <- "AUCGAGCUAGCUAGCUAGCUAGCU"
rna_to_dna(sequence)
#> [1] "ATCGAGCTAGCTAGCTAGCTAGCT"
# Returns "ATCGAGCTAGCTAGCTAGCTAGCT"