In humans of the dna is the same.
a. 50%
b. 25%
c. 0%
d. 99.9%

The correct answer is (D) 99.9%

Deoxyribonucleic acid, more commonly known as DNA, is a complex molecule that contains all of the information necessary to build and maintain an organism. There are more than three million differences between the genome of two persons. Humans share 99.9 percent of their genome sequence with each others.

a and c are the answeres