Question

Assuming human genome as 3 × ${10}^9$bp, in how many base sequences would there be differences?

Answer 1

Part 1: Introduction
99.9% of humans have the exact similar genome, only 0.1% variations are there. The 0.1% variation results in different individuals.

Part 2: Calculation of difference in base pairs
Base difference can be calculated by the formula: Difference in base pairs = variation in genome × base pairs in genome 0.1% × 3×${10}^9$ = 0.1/100 × 3×${10}^9$ = 3×${10}^6$ bp

Final answer
3×${10}^6$ bp