Question

-there are approximately 3,000,000,000 base pairs in the mammalian genome (genes constitute only a small portion of this total)

-there are approximately 10,000 genes in the mammalian genome

-a single gene averages about 10,000 base pairs in size

1) Based on the assumptions above, in the mammalian genome, how many total base pairs are in all the mammalian genes? Show your math.

2) What percentage of the total genome does this represent? Show your math

3) What is the chance (%) that a random mutation will occur in any given gene? Show your math.

Answer 1

10,000 genes, 1000 bp/gene

1) total base pairs: 10,000 genes*1000 bp/gene=10,000,000 bp

2) BP in all genes/all base pairs in genome=
10,000,000 bp/3,000,000,000 bp=

3) do you have the rate of mutation?

Answer 2

No I'm sorry…. That is all the information i was given but you have helped enough I appreciate it!

Answer 3

yeah no worries. well if you find it, you need to multiply it by % gene in genome (which is #2).

oh by the way, after you divide #2, you need to multiply by 100 to get the % value, otherwise it'll be a decimal.