Match column I with column II and choose the correct option.

$\begin{array}{cc}\text{Column I}& \text{Column II}\\ \text{A. Total number of genes}& \text{1. 1.4 million}\\ \text{B. Size of average gene}& \text{2. 3000 bases}\\ \text{C. Single nucleotide polymorphism (SNPs)}& \text{3. 13 years}\\ \text{D. Time duration of Human Genome Project}& \text{4. 30,000}\end{array}$

The correct option is B A-4, B-2, C-1, D-3
Human Genome Project is a mega project launched in 1990 with the aim to sequence the entire human genome. It was coordinated by the U.S. Department of Energy and the National Institute of Health. The project was completed in 2003.

Some of the salient features of the project are:

• The total number of genes identified in the Human Genome Project turned out to be approximately 30,000.
• Although the size of genes varies greatly, the average gene consists of 3000 bases.
• SNPs or Single nucleotide polymorphism are locations where single base DNA differences occur in humans. There are around 1.4 million SNPs in the human genome.