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Question
During oogenesis of amphibians nuclei increase to store which of the following?
During oogenesis of amphibians nuclei increase to store which of the following?
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Solution
The correct option is A rRNA
The rate of ribosome accumulation during oogenesis is high. It exceeds that of the most active somatic cells by at least 1000-fold. Thus, the ribosomal components (5S, 18S and 28S RNA and ribosomal proteins) are produced in massive amounts.
5S RNA is synthesized early, before the other components are made. It is then stored in 7S and 42S ribonucleoprotein particles and later utilized in ribosome assembly. 5S RNA accounts for ~45% of the total RNA in previtellogenic oocytes.
The rate of ribosome accumulation during oogenesis is high. It exceeds that of the most active somatic cells by at least 1000-fold. Thus, the ribosomal components (5S, 18S and 28S RNA and ribosomal proteins) are produced in massive amounts.
5S RNA is synthesized early, before the other components are made. It is then stored in 7S and 42S ribonucleoprotein particles and later utilized in ribosome assembly. 5S RNA accounts for ~45% of the total RNA in previtellogenic oocytes.
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