a$)$ What is meant by the term $$Cap site?$(5$ Points$)$

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b$)$ What happens at the $$Poly $($A$)$ site? $(5$ Points$)$

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c$)$ What is meant by the terms $$Exon $1,$ Exon $2$ and Exon $3?(5$ Points$)$

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d$)$ What is the name of the sequences between $$Exon $1,$ Exon $2$ and Exon $3?(5$ Points$)$