Xenopus laevis rDNA is
a. repeated in sequences that are randomly distributed across the genome.
b. arranged in clusters of repeats, but the spacers between repeats are unique.
c. generally found in one unique sequence in the genome.
d. arranged in clusters of repeats, and the spacers also contain repeated regions.
e. arranged in clusters of unique genes with spacers between them that contain repeated regions.
Ans: d
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