Question

I need some help on how to calculate base pairs

There are 3,000,000,000 base pairs in mammalian genome.
10,000 genes in the mammalian genome
A single gene average 10,000 base pairs in size

1. How many total base pairs are in all the mammalian genes?
2. What proportion (%) of the total genome does this represent?

Answer 1

3.e+17 is the amount of total base pairs in all the mammalian genes

Answer 2

1. gene bp = number of genes x average base pair size =
= 10 000*10 000=100 000 000 =\(\sf 1.0*10^8\)

2. \(\sf \dfrac{gene~bp}{total~number~of~bp}*100\%=\dfrac{100~ 000~ 000}{ 3~000~000~000}*100\%=3.333\%\)