Biology Undergraduate over 7 yearsago

この問題の解説お願いします。自分はaだけだと思ったのですが。。。。

12. The replication of lageing strands of DNA differs from the replication of leading strands in that a.DNA is replicated as short fragments。 b.RNA primers are required c. DNA ligase is needed. d. primase is reduired. e.All ofthe above 4swe7 で