Which of the following statements about obstetrics was true in the 18th century? Medical doctors became midwives. In many medical schools it was considered improper for a man to see a woman's genitals under any circumstances. Obstetric doctors were considered to be witches. Medical students learned about assisting a birth by helping with 25 childbirths.

Some viruses can be crystallized and their structures analyzed. one such virus is yellow mottle virus, which infects beans. this virus has a single-stranded rna genome containing about 6300 nucleotides. its capsid is 25-30 nm in diameter and contains 180 identical capsomeres.if the yellow mottle virus begins its infection of a cell by using its genome as mrna, which of the following would you expect to be able to measure? a) replication rateb) transcription ratec) translation rated) formation of new transcription factors