Replication of RNA genome in RNA virus does not involve proofreading. Thus RNA viruses have higher rates of mutation. So the correct option is B.
<h3>What is meant by proofreading? </h3><h3> </h3>
There are a variety of mechanisms in the cell to prevent mutations. Thus, permanent changes in the DNA sequence are prevented.
During the process of synthesis of DNA, DNA polymerases can analyse any mistake made during the synthesis and fix it. The majority of mispaired bases can be fixed by this process. It is called proofreading.
This process is not present in RNA and RNA polymerases. Thus RNA viruses appear to have higher rates of mutation compared to DNA viruses.
Therefore the correct option is B.
Read more about RNA viruses, here
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Once there was a little igneous rocks name bud he was born in lava and oozed a bunch of lava that made her an igneous rock then she met erosion and Deposition she very slowly turned into a sedimentary rock and she met heat and pressure that's what turned her into ametamorphic
Shape is a characteristic use to group the three kinds of eubacteria.
Their experiments rejected the hypothesis of spontaneous generation.
Redi was the first one who showed with his experiment that the theory of spontaneous generation could not be supported. His experiment with three glass jars with meat (the first was open, the second was covered with a loos netting, and the third was completely closed) showed that the meat cannot produce flies and maggots by itself (meat could not transform into flies as proposed in the theory of spontaneous generation).
Paster approved that cells cannot be generated spontaneously. Pasteur did the experiment with swan-necked flasks and straight-necked flasks (control). Microorganisms fell into the straight-necked flask entering the broth from the surrounding air, so he found living organisms only in that control flask.
Answer:
A:no mating has occurred (sperm is not able to fertilize the egg)
Explanation: