Given below are two statements:
Statement I: RNA has a higher mutation rate than DNA.
Statement II: Viruses with RNA genomes and shorter lifespans exhibit faster mutation and evolution.
In light of the above statements, choose the correct answer from the options given below:
Both Statement I and Statement II are correct, and Statement II is the correct explanation of Statement I.
Both Statement I and Statement II are correct, but Statement II is not the correct explanation of Statement I.
Statement I is correct, but Statement II is incorrect.
Statement II is correct, but Statement I is incorrect.
Related Questions
Ribozyme was discovered by
Kuhne
Duclaux
Cech
Altmann
In the context of the RNA world hypothesis, what is the significance of ribozymes?
They store genetic information.
They are building blocks of proteins.
They demonstrate that RNA can catalyze reactions.
They transport amino acids.
A scientist isolates RNA from a eukaryotic cell. A significant portion of the isolated RNA is found to be associated with large protein complexes. Which type of RNA is this most likely to be?
mRNA
tRNA
rRNA
snRNA
The RNA world hypothesis proposes that RNA was the primary genetic material in early life. Which of the following properties of RNA supports this hypothesis?
RNA is more stable than DNA.
RNA can act as both a carrier of genetic information and a catalytic enzyme.
RNA is double-stranded, providing redundancy in genetic information.
RNA cannot be degraded by enzymes.
In the context of the RNA world hypothesis, the discovery of catalytic RNA molecules (ribozymes) was crucial. Which of the following functions performed by ribozymes is MOST relevant to supporting the hypothesis?
Degrading proteins, demonstrating early enzymatic activity
Catalyzing RNA polymerization, suggesting a mechanism for self-replication
Splicing RNA, indicating a role in gene regulation
Synthesizing amino acids, demonstrating prebiotic metabolic pathways
Which of the following is NOT a reason why rRNA is the most abundant RNA in animal cells?
It is a structural component of ribosomes.
It is required for protein synthesis.
It carries the genetic code from DNA to the ribosome.
Multiple copies of rRNA genes exist in the genome.
Which of these is NOT a supporting argument for the RNA world hypothesis?
RNA's ability to self-replicate
RNA's catalytic properties
The existence of ribozymes
DNA's higher stability
Which prebiotic condition would have MOST significantly hindered the formation of stable RNA polymers in the early Earth environment?
An abundance of organic molecules like amino acids and nucleotides
The presence of clay minerals that can catalyze RNA polymerization
High concentrations of metal ions that catalyze RNA hydrolysis
Alternating cycles of wetting and drying
The RNA world hypothesis posits RNA as the primary genetic material before DNA. Which of the following properties of RNA is LEAST supportive of this hypothesis?
RNA's ability to catalyze reactions (ribozymes)
RNA's ability to store genetic information
RNA's susceptibility to alkaline hydrolysis
The presence of RNA in key cellular processes like translation
Which feature of some RNA molecules supports their potential role as early catalysts?
Linear, unfolded structure
Inability to bind to other molecules
Specific three-dimensional structures
Lack of chemical reactivity
