This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics and Health, Subject name: Social & Preventive Medicine
Total number of genes in Human genome is:- 
Select and explain. 
A. 12000, B. 19000-20000, C. 24000-25000, D. 30000
B: 19000-20000
Answer: B: 19000-20000 
Explanation: Total number of genes in Human genome is 19000-20000. Human genome project (HGP): HGP is an international scientific project The project began in 1990 initially by James D. Watson Ongoing sequencing led to the announcement of the determine more than 3 billion base pairs in the human genome, but also to identify all the genes in this vast amount of data This pa of the project is still ongoing, although a preliminary count indicates about 19,000 - 20,000 genes in the human genome.