Which of the following is not true about gene mutation? It
Answer Details
The statement that is not true about gene mutation is that it always affects the chromosome number. Gene mutation refers to any change that occurs in the DNA sequence of a gene, and it can result in different outcomes.
For instance, gene mutation can introduce new traits into a population by altering the sequence of nucleotides in a gene, which can lead to changes in the phenotype (observable traits). However, some mutations may have an unnoticeable effect on the phenotype, and the individual carrying the mutation may appear normal.
Gene mutations do not always affect the chromosome number, and there are two types of mutations that affect the chromosome number, which are called chromosomal mutations. These mutations involve changes in the structure or number of chromosomes, and they can lead to genetic disorders or conditions such as Down syndrome.
In summary, gene mutation can introduce new traits into a population, cause changes in the DNA, have unnoticeable effects on the phenotype, and be a source of new genes. However, gene mutation does not always affect the chromosome number.