a nonsense mutation occurs in the 267th codon of a gene that encodes a 500 amino acid protein. how many amino acids does the mutated polypeptide contain?

Which best describes a benefit of using dna technology in medicine? a) medicine can be produced in mass quantities. b) medicine can be distributed at a reduced cost. c) medicines have fewer side effects. d) medicines are resistant to antibiotics.

Your sense of touch depends upon: a. direct contact b. heat chemical c. reactions d. pain

What blood vessels carry blood to the heart? away from the heart?