Indicate which of the following statements is false. (Select all
that apply.)
a. Immunoglobulin heavy- and light-chain loci are encoded on the
same chromosome.
b. Light chains contain V and J segments, whereas heavy chains
contain V, D, and J segments.
c. The Vκ gene segments are duplicated in about 50% of the human
population.
d. All immunoglobulin loci include a leader sequence.
e. On the heavy-chain locus, V rearranges to D first, and then J
joins the combined VD sequence.