RNA mutations are not considered genetic mutations

If it's an RNA virus, it's counted, and the rest aren't.

The specific analysis is as follows:

If it is an RNA virus, since its genetic material is RNA, then if its base is changed, it is also called a genetic mutation;

But if the genetic material of the organism is DNA, if only the base of the RNA is changed, it can only be said that the organism has undergone genetic changes or epigenetic changes!

1. Point mutation refers to the mutation of burning a single base on DNA. The substitution of purines for purines (the mutual substitution between A and G) and the substitution of pyrimidines for pyrimidines (the substitution between C and T) are called transitions; Purine to pyrimidine or pyrimidine to purine is called transvertion.

2. DNA damage and deletion

Refers to the disappearance of one or a segment of nucleotides on a DNA strand.

3. DNA damage insertion

Refers to the insertion of a nucleotide or a segment of nucleotides into a DNA strand. If the number of missing and inserted nucleotides in the sequence encoding a protein is not an integer multiple of 3, a reading frame shift occurs, causing all the amino acid sequences to be translated and read confused, which is called frame-shift mutaion.

4. DNA damage inversion or translocation.

Transposition) refers to the reorganization of the DNA strand that inverts one of the nucleotide strands or migrates from one place to another.

5. DNA damage, double-strand break.

As mentioned earlier, a double-strand break in haploid cells is a fatal event.

OK. Gene mutation can occur at any period of biological development, and gene mutation is related to DNA replication, DNA damage repair, carcinogenesis and aging, and gene mutation is also one of the important factors in biological evolution, so the study of gene mutation has a wide range of biological significance in addition to its own theoretical significance. Genetic mutations provide mutations for genetic research and provide material for breeding work, so it also has practical significance in scientific research and production.

Mutations will happen. Mismatches may occur during DNA or RNA replication leading to mutations, or mutations due to other natural factors. In general, the direction of the mutation is random, but a specific direction of mutation will be screened due to human intervention.

There is also the fact that RNA viruses are more prone to mutation than DNA viruses because RNA is more unstable than DNA. The common influenza virus is the RNA virus, and most of us catch a cold every year because the flu virus mutates into a different type and the antibodies produced last time are ineffective.

Of course, there are things that cannot be felt, such as X-ray photographs, which can lead to the displacement of cellular DNA, the occurrence of malformed fetus, and serious cases such as the atomic bomb explosion, which seriously damage the DNA structure and lead to diseased cancers and blood cancers (sepsis, leukemia).

Genetic mutations occur in any living organism, and DNA RNA is no exception.

Yes, but RNA viruses are unstable and more likely to mutate.

The virus is as likely to mutate under the influence of the environment as it is to mutate itself, but in a different direction.

Yes! For example, HIV and cancer viruses are genetic mutations, otherwise how can they be so difficult to treat?

Protein viruses such as prions are not, but DNA RNA can be mutated, so yes.

Mutations from dominant genes to recessive genes are called recessive mutations, and mutations from recessive genes to dominant genes are called dominant mutations. The vast majority are recessive mutations.

1) For sex cells:

If it is a dominant mutation, i.e., AA AA, it can be passed on to the offspring through the fertilization process and manifest itself immediately.

If it is a recessive mutation, i.e., AA AA, it does not manifest itself in the present generation and can only be manifested when the second-generation mutated gene is homozygous.

2) For somatic cells:

If the dominant mutation, the contemporary performance coexists with the original traits, and the shape rock is subdued into a mosaic. The earlier the mutation, the greater the extent, and vice versa. Many of the "bud changes" on fruit trees are caused by somatic mutations, and once found, they can be propagated and preserved by cuttings, grafting or tissue culture.

If it is a recessive mutation, it does not manifest itself in contemporary times.

The mutation of the gene Tongzao Heng causes the original gene to become its allele, and it is not directional: that is, a gene can mutate in different directions; It can be a dominant mutation or a recessive mutation, but more often it is a recessive mutation.

What is not a characteristic of genetic mutations is that the frequency is very high.

Characteristics of genetic mutations include:

1.Mutations occur randomly, and their frequency is influenced by a variety of factors.

2.Mutations are usually spontaneous or caused by environmental factors and often cannot be eliminated by adaptive selection.

3.Mutations may alter gene expression and function, which can have important effects on the development, behavior, and health of organisms.

4.Mutations are often one of the main causes of several genetic diseases, cancers, and genetic variations.

Genetic mutation refers to the process of changing the DNA sequence, often causing the gene to produce a different protein than it normally would. Gene mutations can be classified into the following types:

1.Point mutations: Point mutations are substitutions, insertions, or deletions of a single base, usually caused by misspellings of mutant genes, DNA replication errors, or environmental factors. Point mutations may lead to locus mutations, missense mutations, or nonsense mutations, among others.

2.Insertion Deletion Mutation: An insertion deletion mutation is when a segment of a DNA sequence is added or deleted, usually caused by a locus recombination error or environmental factors. Insertion of deletion mutations may result in frame shift mutations.

3.Inversion Repetitive Mutations: Inverted repetitive mutations are inversions or duplications of a segment of a DNA sequence, usually caused by a DNA recombination error. Inverted repeat mutations may cause overlapping, missing, or distorted DNA sequences in the locus.

4.Chromosomal mutations: Chromosomal mutations are changes in the entire chromosome, chromosome segment, or number of chromosomes, usually caused by chromosome nondisjunction, mismatch, or chromosome rupture and rejoining. Chromosomal mutations may cause genome remodeling or locus location shifts.

First, genetic mutations are ubiquitous in the biological world.

Genetic mutations can occur in both lower organisms and higher animals, plants, and people. Genetic mutations are widespread in species in nature. For example, the short fruit branches of cotton, the short stalk and waxiness of rice, the white eyes and stump wings of fruit flies, the gray-red feathers of domestic pigeons, and genetic diseases such as human chromolysis, diabetes, and albinism are all mutant traits.

Genetic mutations that occur under natural conditions are called natural mutations, and genetic mutations that occur under artificial conditions are called induced mutations.

Second, in its natural state, the frequency of genetic mutations is very low for an organism.

It is estimated that only one germ cell will have a genetic mutation in about 100,000 to 100 million germ cells in organisms such as erect cortico, with a mutation rate of 105 108. The rate of genetic mutation is different for different organisms. For example, microorganisms such as bacteria and bacteriophages have a lower mutation rate than those of higher animals.

Different genes of the same organism have different mutation rates. For example, the mutation rate of the gene that inhibits pigment formation in corn is the mutation rate, while the mutation rate of the yellow endosperm gene is.