[Campbell Biology P.502] Which of the following statements accurately contrasts the rRNA gen... | Practice Question

Which of the following statements accurately contrasts the rRNA gene family with the globin gene families based on the provided text? Select all that apply

  • A: rRNA gene families primarily produce RNA as their final product, while globin gene families produce proteins.
  • B: rRNA gene families consist of identical DNA sequences, whereas globin gene families consist of nonidentical, but related, sequences.
  • C: rRNA gene families are typically found as single copies distributed across multiple chromosomes, while globin gene families are found in tandem clusters on specific chromosomes.
  • D: rRNA gene families typically have very low copy numbers, while globin gene families are highly repeated.

Explanation

The text states that rRNA gene families have RNA as their final products, while globin gene families encode polypeptide subunits of hemoglobin proteins . It also specifies that rRNA gene families consist of identical DNA sequences repeated tandemly, whereas globin gene families are classic examples of multigene families of nonidentical, but related, genes. Options C and D contain inaccuracies regarding copy numbers and chromosomal organization.