The splicing regulatory protein (SR) identifies exons to be included in mRNA. How might SR proteins regulate alternative splicing?
A) There are alternative binding regions for these proteins within each exon.
B) There are alternative SR proteins in different tissues at different stages of development.
C) The SR proteins lose the ability to bind to exon splice suppressors.
D) The SR proteins recruit the splicing small RNAs (U1, U2,…) or unusual ones.
E) The spliceosome complex can bind only to regions with bound SR proteins.
B
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