Generally speaking, children growing up in the same living environment have a closer relationship between their adult lifetime height and the height of their parents. Generally, children of taller parents are more likely to be taller; conversely, children of shorter parents are more likely to be shorter.
If both parents are around the average height of their same sex (between the 25th and 75th percentiles), the genetic height of their children can be calculated using the following formula: Adult target height for boys = average parent height + 6.5 ± 5 Adult target height for girls = average parent height – 6.5 ± 5 However, if one parent is tall and one is short, the child’s height will vary The child’s height varies considerably. Sometimes both parents are tall and the child is short, and sometimes both parents are short and the child is tall, because there are multiple genes that control height, and when there are more short genes, different combinations of short and tall genes in parents can produce children of different heights. The number of short genes in parents is related to the height of direct and collateral blood relatives in the last few generations. Therefore, the height of siblings, (maternal) grandparents, uncles, aunts and uncles, and other relatives can affect the height of the child. Meanwhile, the child’s acquired disease, nutrition, mood, and growth environment also have a greater impact on the child’s height. So genetic height is not equal to the real lifetime height.