Question

The haploid human genome is approximately 3200 Mbp in size (just looking at one of each pair of chromosomes). Currently we think there are about 20,000 genes in the (haploid) human genome. Using these numbers, about how many genes on average are in 1 Mbp of human DNA

Answer 1

Answer:

on average, in 1 Mbp of DNA there are 6.25 genes

Explanation:

If a direct proportionality between the size of the human genome and the amount of genes is assumed, we can make a simple rule of three to calculate the number of genes in 1 Mbp, as follows:

3200 Mbp------------------20000 genes

1 Mbp-------------------------x genes

Clearing the x:

$x genes = \frac{(1 Mbp)x(20000 genes)}{3200 Mbp}=6.25 genes$