A pair of twins in Spring, Texas, is turning heads when they’re introduced to strangers because although they have the same parents, one is white and the other is Black.

Amy Keller, 36, says her son Holden inherited her light complexion and blonde hair while his brother, Hayden, takes after his African-American father with a darker complexion and dark brown hair, reported the Daily Mail.

(Note: the children in the photo above are not Hayden and Holden)

According to Keller, the 15-month-old boys’ father is no longer in the picture, and she is raising them on her own. In addition to being the sole provider, Keller is the only one experiencing bouts of cyber bullying and criticism from strangers.

“In public people sometimes stop us and completely avoid the fact that they look so different. Others are amazed by it,” she told the Daily Mail. “Some people ask me really rude questions like ‘Are you sure they have the same dad?’ I've had some abuse in Facebook mum groups.”

Keller said she has received hurtful comments from people in Facebook groups when she has posted pictures of Holden and Hayden.

“I once posted a photo in one of them of the boys with the caption ‘Their features are starting to look identical,’ and people started commenting, ‘They're not identical,’ ‘How can you say they're identical?’ ‘Are they even twins?’”

Although she admitted the ignorant questioning is “not such a big problem now because the boys are so young,” Keller worries that the intolerance will worsen as they age.

“I worry about people grilling them with questions like ‘Is he really your twin?’” she told the Daily Mail.

“As they've gotten older their differences are so striking, sometimes people don't even believe they are brothers,” she added.

Keller, who works as a veterinary technician, said she knows there will be a day when she and Hayden will have to talk about how his different skin color affects him and his connection to the family.

“'They have no awareness that they are any different from each other now. The boys' dad isn't in the picture and that's unfortunate, but it's his choice,” she told the Daily Mail. “My family is Caucasian, so I do know there will come a time when I will have to have a talk with Hayden. When the time comes I will just explain to him that Holden and him are brothers and nothing can change that. But I just hope to build the foundations of love and acceptance, which will hopefully help him through any issues he has.”