Compared with DNA replication, transcription is error prone because of differences in .

more ; the proofreading system

Explanation:

Transcription is considered to be more error prone and this is mainly attributed to differences in the proofreading system.

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by drinking easy

very easy

i think a) betsy can donate only blood to mark is correct because, mark and betsy have the same blood type. whereas nobody else has b+ blood so betsy can't donate to them.