During rna processing a(n) is added to the 5' end of the rna. a. 3' untranslated region b. long string of adenine nucleotides c. 5' untranslated region d. coding segment e. modified guanine nucleotide

Anurse is caring for a 42-year-old client who is scheduled for an amniocentesis during the fifteenth week of gestation because of concerns regarding down syndrome. what other fetal problem does an examination of the amniotic fluid reveal at this time?