What was the estimated number of genes in the human genome (in $,000$)?

Chromosome $1$ has the most genes,while chromosome $Y$ has the fewest. Identify the correct number of genes present on these chromosomes respectively.

How many locations have been identified in the human genome where single base differences occur?

In the Human Genome Project, among the two major approaches for sequencing the whole set of the genome, the one that contained all the coding and non-coding sequences and later assigned different functions to different regions in the sequence is called . . . . . . .

The approach of identifying all the genes that are expressed as $RNA$ and then determining the functions of all the coding and non-coding sequences in the genome is known as .........

How many genes are present on the $Y$ chromosome?