It is also clinically possible for parents to have double eyelids and children to have single eyelids. Although double eyelids are dominantly inherited in daily life, that is, if both parents have double eyelids, the chances that the child will have double eyelids are very high. But there is also a situation called dominant gene recessive inheritance, that is, although both parents are double eyelids, but most likely also with a single eyelid recessive gene, if the child inherits this part of the recessive gene, then the child is very likely to be single eyelids. So it is possible that both parents have double eyelids and the child has single eyelids, but the chances are relatively small. There is also a situation where the child may still be young, such as a small child within elementary school, the eyes may not yet become double eyelids, and the daily called inner double is also considered a kind of double eyelids.