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The infectious agent of BSE is a protein, which is what we call a prion. A prion is identical to a normal protein in terms of amino acid sequence, that is to say, it is the normal protein of the organism, but it folds differently from a normally folded protein with the same amino acid sequence. But when there is such a misfolded protein, it induces other normally folded proteins with the same amino acid sequence to transform into the same misfolded protein, and these converted proteins can affect other "like" proteins, thus achieving so-called replication.
It is emphasized that the so-called prions do not use proteins as genetic material.
In other organisms, the possibility of protein as genetic material is very small, and it is not possible to completely rule out the possibility of using proteins in nature.
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BSE virus is a prion, prions are proteins, but prions are products encoded by the genes of animal cells, so proteins are not genetic material.
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Proteins can be reversed into RNA and DNA, and instead of traditional genetics, they occasionally have a genetic role.
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I studied biology, and the teacher said that this protein will be converted into RNA in some way, and then into DNA through the action of reverse transcriptase, so it also has the role of heredity and replication, and it should be a genetic factor.
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Be. The BSE virus is a prion, prions are proteins, and when the prion enters the host cell, it replicates against the central law to achieve the purpose of controlling the host cell, and this discovery has now been confirmed.
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Some organisms are organisms that don't have DNA or RNA, and proteins are the genetic factors. For example, prions.
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Viruses and cells are not the same substance! Although they are made up of the same substance!
The genetic factors of the cell are in the nucleus, and the virus does not have a nucleus!
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I've been thinking about this all the time.
Otherwise, how can prions replicate and geneticize.
But there's no actual evidence to prove it.
So the answer is uncertain.
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Thoughtful. I support you, and I also thought of the "original virus".
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With the exception of some viruses whose genetic material is RNA and prions, which are proteins, the genetic material of the rest of the viruses and all organisms with typical cellular structures is DNA.
Genetic material, mainly DNA and RNAIn living things, the vast majority of genetic material is DNA. But for a specific organism, there is only one kind of genetic material, either DNA or RNA.
The protein-pathogenic conformational hypothesis, which originated from the discovery of prions. Although the genetic mechanism of prions is not well understood, as far as biological theory is concerned, the compound bonding of prions is not based on nucleic acids, but on proteins, which will have a significant impact on the exploration of the origin of life and the nature of life phenomena.
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Proteins cannot replicate themselves, and their amount in chromosomes is not fixed, and their molecular structure is unstable; It also cannot be passed on to offspring, so proteins cannot be genetic material.
As a chain of genetic material, at least the following 4 conditions must be met:1The ability to replicate itself precisely in the process of cell growth and reproduction allows for a certain continuity of the pregenital;
2. It can guide protein synthesis, so as to control the traits and metabolism of organisms;
3. Have the potential ability to store a large amount of genetic information;
4. The structure is relatively stable, but it can mutate under special circumstances, and the canopy can continue to replicate after the mutation and can be inherited to future generations.
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The genetic material of the virus.
The genetic material is DNA: most viruses such as bacteriophages;
The genetic material is RNA: HIV, SARS, tobacco mosaic virus, etc. (containing reverse transcriptase);
The genetic material is proteins: prions.
This statement is not true. The genetic material of cellular organisms and most viruses is DNA, a few viruses have RNA, and a very small number of viruses (such as prions, which can cause mad cow disease) have protein.
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Question 1: The difference between genetic material and genes, can it be said that the genetic material of human beings is genes 5 points This is high school biology, the genetic material is large, and the genes are small, because genetic genes include genetic DNA and RNA of some viruses, so it is not a concept.
Question 2: Is RNA genetic material??? Be.
Because the genetic material of the vast majority of organisms is DNA, and only a few viruses have the genetic material of RNA, DNA is the main genetic material.
It can also be seen that in the biological world, RNA can also serve as genetic material.
Question 3: Is it true that DNA is genetic material... Isn't it right or wrong to say that DNA is the main genetic material, and that the word "main" is missing?
5 points DNA is the genetic material, and this statement is certainly true, and it is certainly true that DNA is the main genetic material. But the genetic material cannot be said to be DNA, because there is RNA, and prions replicate by assimilating other proteins, and do not contain nucleic acids. DNA and genetic material are in the relationship of inclusion and being included, and since DNA belongs to a subset, both statements are true!
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