If there are 64 potential codons that code for various amino acids but only about 20 specific amino acids, what must be true about the genetic code?
A) Most of the codons are not used.
B) There are two codons for each amino acid, and the rest are stop codons.
C) Multiple codons code for the same amino acid.
D) All are used, but bacteria and plants each have 20 different amino acids.
Answer: C
You might also like to view...
Pathologists check lymph nodes near tumors for cancer because (select all correct choices):
A. lymphatic tissues are at high risk for transforming into cancer cells. B. lymph nodes near a tumor collect tumor cells that have become metastatic. C. malignant tumors preferentially invade lymph nodes. D. it is easier to detect cancer cells that are formed in lymph nodes. E. cancer cells will always turn a different color in lymph nodes.
A person with celiac disease is hypersensitive to ____
a. milk products b. gluten c. nuts d. shellfish e. berries
Typically, to grow transgenic plants, the vector with the inserted gene is
A. an egg cell. B. a pollen cell. C. a pollen cell that is then fused with an egg cell. D. plant cell that is then cultured to produce a whole plant. E. all of these techniques are widely used.
In the scientific version of a species name, which of the terms is capitalized?
a. the first term only b. the second term only c. both the first and second terms d. neither the first nor the second term