Genetics of Jamaican sprinters’ dominance

Question = Scientists have looked into the genetics of Jamaican sprinters’ dominance. The first gene associated with powerful sprinting is the angiotensin-converting enzyme, or ACE, gene. If you have a particular variant of this gene better known as ________you are likely to have a larger than average heart capable of pumping highly oxygenated blood to muscles quicker than the average human. That also gives your body a better response to training. In people of west African origin, the frequency of the variant is slightly higher than in those of European and Japanese origin. In Jamaica, it’s a little higher than in west Africa ?

Answer=  “D allele”