Question

The human genome is 3,000,000,000 bases long. You have the sequence ATTGCGCGTTGATC. How often do you expect this sequence to occur in the human genome (that is what is the expect mean for the occurrence of this sequence)?

Assume that A, T, G, and C occur in the same ratio.
Assume that
4^13= 125,000.000
4^14 = 250,000,000
4^15= 1,000,000,000
4^16= 4,000,000,000

Answer 1

The expected mean for the occurrence of the given DNA sequence in the human genome is approximately 44.77 times.

Step-by-step explanation:

The human genome consists of about 3 billion base pairs of DNA. The given sequence of ATTGCGCGTTGATC is 13 bases long. To calculate the expected mean for the occurrence of this sequence in the human genome:

1. Calculate the total number of possible 13-base sequences: 4^13 = 67,108,864.
2. Divide the length of the human genome by the total number of possible 13-base sequences: 3,000,000,000 / 67,108,864 = 44.77.

Therefore, you can expect the given sequence to occur approximately 44.77 times in the human genome.