Human Body feed
99.9%
Human DNA sequences are overwhelmingly similar, but 99.9% is a simplified figure that depends on what is compared and counted. Broader accounting of genomic variation can yield other estimates, so it is not an exact percentage guaranteed for every pair of people.
300
Babies have more separate skeletal pieces than adults, often described as about 300 bones compared with the usual adult count of 206. The newborn number is approximate because developing bone and cartilage are not always counted the same way.
1 cm
People are usually slightly taller after a night lying down because spinal discs regain fluid when unloaded. Around a centimeter is a useful rough illustration, not a fixed daily change for everyone.