If race were proved to be not based in biology, that it was merely a social construct, wouldn't this statement require an extensive study of gene frequencies in nuclear DNA? For example, let us say that blacks in America truly have a genetic advantage in sports such as basketball and football, to refute or substantiate this claim there would need to be a study of large populations measuring athletic ability (as a series of genes) and mapping the frequencies across already established racial lines. Is this true?

a. involves inserting normal genes into cells with a genetic disorder
b. involves a vector, and DNA sequences does not
c. compares DNA fragments rather than the nucleotide order of DNA
d. makes millions of copies of DNA pieces

Please choose for th best answer and explain it..
tnx!

DNA fingerprinting uses the fact that individuals have different numbers of what?

A. genes in their Y chromosomes
B. genes in their X chromosomes
C. repeating units
D. chromosomes