What does it mean when we say the genetic code is redundant?
A) A single codon can specify the addition of more than one amino acid.
B) The genetic code is different for different domains of organisms.
C) The genetic code is universal (the same for all organisms).
D) More than one codon can specify the addition of the same amino acid.
Answer: D
You might also like to view...
Plant success on the terrestrial landscape is linked to the evolution of all of the following except
A. specialized roots. B. stems. C. specialized reproductive features. D. increased area for photosynthesis in the leaves. E. gas-filled air spaces.
RIPs as Cancer Drugs Melissa Cheung and her colleagues incorporated a peptide that binds to skin cancer cells into the enzymatic part of the E. coli enterotoxin RIP. The researchers created a new RIP that specifically kills skin cancer cells, which are notoriously resistant to established therapies. Which cells survived best at 10–6 grams per liter RIP?
1.human cancer cells of the skin
2.breast
3.liver
4.prostate
A solution registers 12 on the pH scale. This solution is:
Signs and symptoms of smallpox generally appear within ___ days following exposure.
A) 2 to 5 B) 7 to 9 C) 10 to 12 D) 14 to 16