Generally speaking, parents with single eyelids can’t give birth to a child with double eyelids, but we can’t rule out the possibility of genetic mutation.
Single and double eyelids are determined by genes, double eyelids gene is a dominant gene, single eyelids is a recessive gene, only single eyelids recessive gene is pure, can appear single eyelids. The fact that both parents have single eyelids means that they do not have a dominant gene for double eyelids and therefore cannot have a child with double eyelids. However, if the child has a genetic mutation, there is a possibility of double eyelids.
Double eyelids are genetically determined, and people with single eyelids can have double eyelids through surgery or other plastic surgery. If the patient’s single eyelid to double eyelid demand, it is recommended that the patient professional medical institutions, under the guidance of the doctor to choose the appropriate surgical program, will be single eyelids into double eyelids.