DNA is usually neatly bundled up into 46 little packets, called chromosomes. But even so, the difference between men and women is very small. The difference in skin colour is another very minor point. Skin colour comes from the melanin in your skin - more melanin means a darker skin colour. This melanin is made by cells called melanocytes.
All humans have roughly the same number of melanocytes.
It's the activity of the melanocytes that makes the difference between a Scandinavian and a dark-skinned person. The third main difference is height . But once again, this difference is very minor. Your final height depends upon on how much growth hormone is squirted into your body at different times in your life. Growth hormone comes from the pituitary gland in your brain.