What are the functions of genes in DNA

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Solution

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. In humans, genes vary in size from a few hundred DNA bases to more than 2 million bases. The Human Genome Project estimated that humans have between 20,000 and 25,000 genes.

Every person has two copies of each gene, one inherited from each parent. Most genes are the same in all people, but a small number of genes (less than 1 percent of the total) are slightly different between people.

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Similar questions

Arrange the following steps involved in gene therapy in a correct order:

i. Isolation of functional or expressible gene to be inserted

ii. Identification of non-functional gene

iii. Insertion of DNA into a vector for delivery into the target cell

iv. Recombinant DNA construction

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