Thanks to college radio, the band had a national reputation as a band to watch, but their maiden major label voyage, toyboatToyBoatTOYBOAT (Epic, 1990) got caught up in the wake of label politics before it had the chance to sink or swim. Their video for the radio hit “With You” got some airplay on MTV. After placing in the Rumble, the band’s EPs Only Breathing (Throbbing Lobster, 1985) and Cloud Factory (Link, 1987) became top sellers at Newbury Comics. O Positive formed in 1983 in the metro-west suburbs, and their intense live shows made them a popular live act. The quintet’s angular melodies, emotional vocals, shimmering guitars, and glossy production struck a positive chord among local rock fans. There are many other, rarer possibilities too.Īlthough I won't go into them here, we have covered a lot of them before in other answers.Back in the ’80s and ’90s, you couldn’t turn on a radio in Boston without hearing one of O Positive’s songs. In fact, every one of their children would have a 1 in 4 chance for being O.Īnd this is just the most common way an AB parent can have an O child. She is A blood type but like the father, also carries an O version of the ABO gene.Īs you can see in the image to the right, these two parents can have an O child. Now let's imagine that he has a child with a woman who has an A and an O gene. He is AB blood type but carries the O version of the blood type gene. He has an AB version and an O version of the ABO gene. Imagine a dad with the middle combination of genes. They are all AB blood type but the middle gene combination can have an O child. These people have the following possible gene combinations: Gene 1 One of the less rare ways is when the parent has the cis-AB version I was talking about earlier. There are a few ways that an AB parent can have an O child. But an AB parent usually has an A and a B version, not an O. To be O, you usually need to get an O from both mom and dad. The table also shows why AB parents so rarely have an O child. If you have an O and something else, your blood type will be that something else. These six combinations lead to the four possible blood groups as follows: Gene 1Īs you can see, O is sort of like a zero. Since we have two copies of this gene, that means there are six different possible combinations of these three versions. The ABO gene comes in three varieties: A, B, and O. This is true of the blood type (or ABO) gene as well. Remember, we have two copies of each of our genes – one from mom and one from dad. The reason why an AB parent usually does not have an O child has to do with how blood type normally works genetically. Even though your high school biology teacher said it was impossible. There are even a few other rare ways to break the blood type inheritance rules (like chimerism and Bombay blood group), which I won’t go into here. And it is much, much less common in other ethnic groups. So even though it is more common for an AB parent to have an O child amongst the Koreans and Japanese, it still isn't that common. There it looks like about 0.001% of folks have the cis-AB allele. The next most common group is the Japanese. And that is the group where it is most common! It isn't.įor example, one estimate I saw stated that about 0.03% or 3 out of every 10,000 Koreans have this blood type. Now I don't want you to come away thinking this is an everyday thing for most Asians. People with this gene version have an AB blood type but can easily have an O child. Some of these folks have a rare version of the ABO blood type gene called cis-AB. One exception is in certain Asian groups. Usually, an AB parent and an A parent can only have children who are Type A or Type B. In fact it would be fair to say that it is exceedingly rare. An AB parent can indeed sometimes have an O child.
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