AP BIOLOGY

Detailed explanation-1: -All human beings are 99.9 percent identical in their genetic makeup. Differences in the remaining 0.1 percent hold important clues about the causes of diseases.

Detailed explanation-2: -Its findings suggested that all humans are 99.9% genetically identical and only 0.1% of genetic variations are responsible for the phenotypic differences, such as physical traits (eg, height, intelligence, hair, and eye color), disease susceptibility, and drug responses, among individuals in populations.

Detailed explanation-3: -Humans are 99.9% identical on a genetic level. The 0.1% difference is caused by insertions, deletions and substitutions in the DNA sequence. These substitutions are known as Single Nucleotide Polymorphisms (SNPs). They occur about every 1000 base pairs.

Detailed explanation-4: -As we know, 99.9% of nucleotide bases are the same in all humans. However, there are some differences in DNA sequences among people, which make them unique. This is their DNA fingerprint.

Detailed explanation-5: -Humans share 99.9% of our DNA with each other. That means that only 0.1% of your DNA is different from a complete stranger! However, when people are closely related, they share even more of their DNA with each other than the 99.9%.