Assume that a base addition occurs early in the coding region of a gene. Is the protein product of this gene expected to have MORE or FEWER altered amino acids compared with the original gene with a base deletion late in the coding region? Explain
What will be an ideal response?
Since an addition or deletion of a base pair would change every codon after the addition or deletion, then adding a base early in the coding region would change more amino acids than deleting a base later in the coding region.
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The definitive host and reservoir for Wuchereria bancrofti is:
a. mosquito. b. microfilaria. c. humans. d. tabanid fly.
Which of the following statements about the protein calmodulin is TRUE?
It interacts directly with the ligand receptor. It interacts directly with the G protein. It binds to Ca 2+ ions to mediate a cellular response. It binds to the Ca 2+ ion channel causing it to close. It induces ATP hydrolysis.
A phospholipid molecule has a polar and a nonpolar end. Because of this, water molecules form
A. polar bonds with the nonpolar end of the phospholipid molecule. B. polar bonds with the polar end of the phospholipid molecule. C. covalent bonds with the nonpolar end of the phospholipid molecule. D. hydrogen bonds with the nonpolar end of the phospholipid molecule. E. hydrogen bonds with the polar end of the phospholipid molecule.
What is the nucleosome core particle composed of?
a. histones H2A, H2B, H3, and H4 b. single-stranded binding proteins c. histones H1 and H2A d. histones H3 and H4