Is it true that genetic mutations can alter gene frequencies in a population?

Hello. That's right.

In nature, genetic mutations, genetic recombination, and natural selection all affect changes in gene frequencies. The change of gene frequency is essentially the evolutionary process of organisms, and genetic mutations provide raw materials for evolution.

If biological mating is random and free, each individual has an equal chance of mating with other individuals of the opposite sex in the population, and the offspring do not die, etc., then genetic recombination does not change the gene frequency of the population. But in fact, this is the ideal condition, which does not exist in nature. Individual mating between organisms is not free, and not every individual has an equal chance of mating with other individuals within the same population.

Some individuals have many chances of mating, while others don't. For example, there are many opportunities for the king monkey in the monkey group to mate with the female monkeys in the monkey group, and the chances of mating in other male monkeys are reduced, so genetic recombination will cause a lot of opportunities for a certain gene to be passed on due to the unequal mating opportunity, and the chance for other genes to be passed on is reduced, which will cause changes in the gene frequency of the population.

Gene mutations produce new alleles that can cause changes in gene frequencies.

Hope mine is helpful to you.

Of course wrong, there is a certain probability of genetic mutation and it is extremely low, and the change in gene frequency of the population is related to isolation, that is, natural selection.

I think this is wrong, because mutated genes that cannot be passed on to the next generation, or mutated genes that cannot communicate freely, cannot change the gene frequency of the population.

This statement is true because genetic mutation is biological evolution.

Raw materials are provided, and the essence of biological evolution is population gene frequency.

At the same time, the mutation will produce new genes, which can be passed on to future generations, so that the genetic neutrality in the population will be changed, so it is correct. Hope.

Yes, generally those conditions that do not meet the genetic equilibrium (Harwin's law) may alter the gene frequency.

Yes, gene mutations can alter gene frequencies; Whereas, genetic recombination does not produce new genes, only new genotypes, and therefore does not change gene frequencies. Score).

1. The concepts of the two are different.

Gene mutation rate refers to the probability of gene mutation in the body, and the gene mutation rate is very low for an organism in its natural state.

The frequency of gene variation refers to the frequency of a gene in a population, for example: AA30%, AA60%, AA10% in a population, then the gene frequency in this population is A60%, A40%, mutagenesis breeding is to induce gene mutations, so as to increase the mutation rate of genes.

2. The scope of the two is different.

The gene mutation rate is specific to an organism; The frequency of genetic variation is specific to individual organisms.

If it refers to nature, genetic recombination does not change the gene frequency.

If the offspring are mated freely and the offspring are alive normally (without defects such as genetic diseases), the gene frequency is generally considered to be unchanged because the probability of passing on each gene to the next generation is the same.

In the case of self-breeding, if we exclude the frequency of gene mutations, there are generally more and more homozygous, because the homozygous offspring are all homozygous, and the offspring of heterozygous (referring to a pair of genes) are homozygous and heterozygous, but the gene frequency remains the same, and the genotype frequency changes.

The reason for the change in gene frequency is actually the natural environment's choice of the shape of the gene. If the coat color of the animal is different in the environment, the animals with the better concealment coat color gene can survive more, then the genes they carry can continue to be inherited, and their gene frequency will increase.

It has nothing to do with the mode of mating.

Just look at the example of the American Ezi, the environment can decide.

At the beginning, the black ezi was obvious and easy to be captured by natural enemies, so the frequency of the black gene was low, and in the later development of the art industry, there was more and more black smoke. At this time, black becomes a protective color, and white moths are easy to be captured by natural predators, and the frequency of white genes decreases. On the other hand, the frequency of the black gene is higher at this time.

Gene mutation rate refers to the probability of genetic mutation in a gene in the body.

Whereas gene frequency refers to one.

The frequency weight of a gene in a population.

For example. 30% AA in a population. aa60%。a10% then the gene frequency in this population is a60%. a40%。

Mutagenesis breeding is the induction of mutations in genes. This increases the mutation rate of genes.

Analysis: Gene mutation is a change in gene structure caused by the addition, deletion or replacement of base pairs in a DNA molecule.

What changes is the structure, not the quantity. The result of the mutation is the creation of an allele.

This is also a condition for the satisfaction of the law of genetic equilibrium.

The British mathematician Hardy (1877-1947) and the German physician Weinberg (1862-1937) independently proved in 1908 and 1909 respectively that a population should meet the following conditions: 1The population is enormous;2.

Mating between individuals in a population is random, which means that each individual in the population has an equal chance of mating with the other individuals in the population;3.No mutations were produced;4.There is no individual migration or gene exchange between populations;5.

Without natural selection, the gene frequencies (including genotype frequencies) of this species can be stable and balanced from generation to generation.

Bao Huisen includes the following aspects:

1 The population is large enough.

2 Chongbi acres of scattered forests can mate freely.

3. There is no moving in and out.

4. Natural selection has no effect on individuals with different genetic phenotypes.

5 genes do not mutate.