What is insertion? A. A base was removed

B. The wrong bases were matched together

C. An extra-base was added in

What do animals wth echolocation have in common other than echolocation

How do you transfer mrna into codons ? i'm so confused : (

Which best describes a rhinovirus? o a. a virus that causes a common cold o b. a protective shell around a virus o c. a tube the comes off a virus o d. a piece of dna transferred by a virus