3. which of the following would not prevent an mrna from being transported to the rough endoplasmic
reticulum in the cytoplasm?

the ends of the mrna were not modified.
the mrna was not correctly spliced
the mrna was not bound by a ribosome.
the mrna is for a secreted protein.

5. what type of mutation could cause the 3-nucleotide reading frame of trna to be shifted?

switching a normal nucleotide for an abnormal one
deletion of one or more nucleotides during replication
replacing an amino group
incorrect base pairing

Monarch butterflies have brightly colored orange wings with black patterns on them, making them easily visible to birds that eat butterflies and moths, yet birds rarely eat the monarchs. likewise, the monarch caterpillars are brightly striped yellow and white and black, and they also are rarely eaten by birds, although some wasps will attack them and feed them to their young. what can be inferred from these observations? monarchs must threaten and attack birds, but not wasps. monarchs have a way of discouraging bird predation that does not involve hiding. monarchs’ wings are so colorful that most birds must find them difficult to eat. monarchs lay more eggs than other less conspicuous butterflies.