The Messenger Hypothesis States That

Question

The messenger hypothesis states that
A)messenger RNAs are very stable and are not destroyed.
B)ribosomal RNAs carry the information for making proteins.
C)messenger RNAs carry genetic information to ribosomes.
D)new ribosome are made to transmit new genetic information.
E)None of the choices are correct.

Accepted Answer

The messenger hypothesis states that messenger RNAs (mRNAs) are responsible for carrying genetic information from DNA to ribosomes, where proteins are synthesized. This hypothesis was proposed by Francis Crick in the 1950s and has since been supported by numerous experimental studies. The stability of mRNA varies depending on the specific molecule and the cellular environment, but they are generally not as stable as other types of RNA such as ribosomal RNA. Therefore, choice A is incorrect. Ribosomal RNAs (rRNAs) are important components of ribosomes but do not carry the information for making proteins, so choice B is incorrect. While new ribosomes are constantly being produced in cells, this is not directly related to the transmission of genetic information, making choice D incorrect as well.