Is it legal in Mississippi for a 16-year-old to get pregnant by 21-year-old?

Yes, it is legal in Mississippi for a 16-year-old to get pregnant by a 21-year-old. According to Mississippi law, the age of consent is 16, meaning that anyone 16 or older is legally able to consent to sexual activity. Therefore, it is not illegal for a 21-year-old to engage in sexual activity with a 16-year-old, and it is not illegal for a 16-year-old to become pregnant as a result of that sexual activity.