Question

write short nots on gene

Answer 1

A gene is the basic physical and functional unit of heredity. Genes are made up of DNA. Some genes act as instructions to make molecules called proteins. However, many genes do not code for proteins.

Gene mutations can be defined as the sudden and heritable changes in the sequence of nucleotides of genes in the DNA. The gene mutations can be of following types:

Gene mutations can be defined as the sudden and heritable changes in the sequence of nucleotides of genes in the DNA. The gene mutations can be of following types:1. Deletion: It refers to the loss of the segment of nucleotides. Cystic fibrosis is a genetic disorder caused by deletion mutation.

Gene mutations can be defined as the sudden and heritable changes in the sequence of nucleotides of genes in the DNA. The gene mutations can be of following types:1. Deletion: It refers to the loss of the segment of nucleotides. Cystic fibrosis is a genetic disorder caused by deletion mutation.2. Insertion: It refers to the addition of base pairs to the segment of the nucleotide. For example, Huntington's disease.

Gene mutations can be defined as the sudden and heritable changes in the sequence of nucleotides of genes in the DNA. The gene mutations can be of following types:1. Deletion: It refers to the loss of the segment of nucleotides. Cystic fibrosis is a genetic disorder caused by deletion mutation.2. Insertion: It refers to the addition of base pairs to the segment of the nucleotide. For example, Huntington's disease.3. Substitution: It refers to the exchange of a base pair for another. When a purine is substituted with another purine or a pyrimidine is substituted with another pyrimidine, it is called transition mutation. When a purine is substituted with a pyrimidine or vice versa, it is called transversion.