Short answer: protruding ears are dominant, not recessive. The trait follows an autosomal dominant pattern, so a single copy of the gene is enough - which is why one parent with prominent ears passes roughly a 50 percent chance to each child, and why it can come from mom or dad equally. Below is what the research shows and what you can actually do at each age.
If you have ever wondered why your ears stick out more than your friends', you are not imagining a family pattern. Protruding ears are largely genetic, and the trait passes down through generations in a predictable way. Here is what the research actually says, and what your real options are if you would rather not pass the same self-consciousness on to your kids.
Dominant or recessive?
Dominant. Because prominent ears are autosomal dominant, the trait does not skip generations the way recessive traits do, and it is not linked to sex - inheriting it from your father is exactly as likely as inheriting it from your mother. One affected parent means about a 50 percent chance per child; two affected parents raise it further. A child can also have prominent ears when neither parent does, because expression varies a lot between people carrying the same trait.
What the science says
Roughly 5 percent of people have ears that protrude more than 2 cm from the side of the head, the clinical threshold for what surgeons call prominent ears. Studies suggest the trait is autosomal dominant, meaning if one parent has prominent ears, each child has roughly a 50 percent chance of inheriting them. The shape is determined in utero and is essentially fixed by age 6, when the ear has reached about 85 percent of its adult size.
Why ears protrude
The two main anatomical causes are an underdeveloped antihelical fold (the curved ridge inside the ear) and an overdeveloped concha (the bowl-shaped cavity that pushes the ear away from the head). Both are inherited cartilage traits, not anything you did or did not do.
What you can do at each age
Newborn (0 to 6 months): soft ear splints can reshape cartilage while it is still soft and pliable. Highly effective, but only works in this short window.
Childhood (6 onward): cartilage has hardened. Options narrow to surgery (usually delayed until age 6 or later) or non-surgical correction once the child is old enough to manage it themselves.
Teen and adult: otoplasty (ear pinning surgery) is the permanent option but is invasive and expensive. Non-surgical adhesive solutions like Earswrap offer a reversible, daily alternative.
Should you do something about it
Medically, no. Prominent ears do not affect hearing or health. Cosmetically and psychologically is another story. Studies show prominent ears are one of the most common targets of childhood teasing, and many adults report ongoing self-consciousness that affects hairstyle choices, photo comfort, and dating confidence. If it bothers you, that is a valid reason to do something about it, surgical or not.