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It is generally assumed that most mammalian genes are transcribed from both alleles .
 DNA: alleles; DNA: mammalian genes
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: cell line, protein, RNA, DNA, cell type 
Text: {0} 
 Entities: alleles, mammalian genes 
Answer:
 DNA: alleles; DNA: mammalian genes