Question Detail
Question
Consider the following statements: 1. In the lampbrush chromosomes of amphibian oocytes, the loops are engaged in the transcription. 2. In polytene chromosomes, the puffs are the sites of mRNA formation. Which of the statements given above is/are correct?
Correct Answer
Option C is the correct answer.
Detailed Explanation
Both statements are correct. In lampbrush chromosomes, found in amphibian oocytes, the lateral loops are sites of intense RNA transcription. In polytene chromosomes, found in dipteran salivary glands, the 'puffs' (or Balbiani rings) are decondensed regions that are also active sites of mRNA transcription, reflecting high metabolic activity.
Hint
Consider the function of specialized structures on these unique types of chromosomes.