How can only four nucleotides account for the extreme diversity of traits within living things?
a. The biochemical structure of nucleotides differs between cell types.
b. The nucleotides can base pair with any other nucleotide.
c. Nucleotides are arranged in many different sequences.
d. Different proteins can be encoded from the same DNA sequence.
e. Complex organisms have more than four types of nucleotides.
c
You might also like to view...
Describe three characteristics of an ideal cloning host for genetic engineering
What will be an ideal response?
Trichomoniasis in humans is caused by a member of the ________ group of protists.
A. Parabasalia B. Amoebozoa C. Fornicata D. Euglenozoa
Cell surface molecules are labeled with a fluorescent tag and then a portion of them are bleached with a laser beam. What would one observe after the cell is incubated for a few minutes?
A. The bleached molecules would disappear into the cell. B. The bleached molecules would diffuse laterally through the membrane and intermix with unbleached molecules. C. The bleached molecules would remain in the spot where bleaching occurred. D. All the bleached molecules would flip-flop across the cell membrane. E. All of the choices are correct.
Pinniped means
a. clawed footed. b. flipper footed. c. feather footed. d. paddle footed. e. split footed.