If parents with two very different haplogroups (ex Japanese and Central African) have a child, what haplogroup

Question

will the child have

Answer 1

The child is not limited to one 'haplogroup'.  It is not the same as the blood type, or anything like that.

Each of us have numerous ancestors, who can (and often are) from various locations/ origins. All have a legitimate portion of the person's ancestry.

Answer 2

Human

Answer 3

Why would this be important? Does classification in any one particular haplogroup mean you're somehow better? You need to remember that human beings are 99% identical, which means that these supposed vast differences between us account for less than 1% of our overall genetic makeup.

Answer 4

There are actually two different types of haplogroups.  One type is determined by studying the mitochondrial DNA, which traces the maternal line (your mother's mother's mother's mother, etc).  The other is determined by studying the Y-chromosome DNA, which traces the paternal line (your father's father's father, etc).  Since only males have a Y-chromosome, females can't be tested for a Y-DNA haplogroup.

If the person in question is a boy, he can be tested for both haplogroups (mtDNA and Y-DNA) and therefore would have both; one that represents his mother's line, and one that represents his fathers.  If the child is a girl, she can take a mtDNA test, but she'd need to get a brother or male cousin to be tested in order to find her father's Y-DNA haplogroup.

Of course, we have many other ancestors besides our direct maternal and paternal lines, and all those ancestors have haplogroups, too.  But at this point, we don't have the ability to find all those haplogroups by taking a single test.  Maybe someday!