Washington (CNN) GOP Rep. Steve King of Iowa questioned on Wednesday whether there would be any population left on Earth if not for rape and incest, a remark that has drawn condemnation from both Democrats and Republicans.

"What if we went back through all the family trees and just pulled those people out that were products of rape and incest? Would there be any population of the world left if we did that?" he said in Urbandale, Iowa, according to video posted online by the Des Moines Register , which was first to report on the remarks Wednesday.

"Considering all the wars and all the rape and pillage that has taken place ... I know I can't certify that I was not a part of a product of that," King said. "I'd like to think that every one of the lives of us are as precious as any other life," he added.

The remarks came as King was defending not allowing exceptions for abortion in cases of rape or incest.

The Iowa Republican is a controversial and polarizing figure on Capitol Hill who has a track record of making racist comments that have generated backlash across the political spectrum.

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