If one parent has A and another has AB, they can either produce a child with A, B or AB blood types. If one parent has A and another has O, they can either produce a child with A or O blood types….ABO Blood Type Calculator.

An AB and O couple producing an AB child cannot be explained in terms of the usual inheritance patterns. One would not expect the cord blood result to be AB when the mother is type O, however, in very rare instances, such as the cis-AB blood type, it is possible.

Yes they can. An AB parent can indeed sometimes have an O child. But it is by no means common. In fact it would be fair to say that it is exceedingly rare.

Believe it or not, in this case having a blood type different from either parent is by far the most common result. In most cases, an O parent and an AB parent will have only A or B kids. It is only very rarely that they might have an AB or an O child (see the links at the end for these exceptions). Isn’t genetics fun!

It is possible for a mother’s red blood cells to cross into the placenta or fetus during pregnancy….A-B-O incompatibility occurs when:

• the mother is type O and the baby is B, A, or AB.
• the mother is type A and their baby is B or AB.
• the mother is type B and their baby is A or AB.

A study conducted by the Institute of Pest Control Technology found that mosquitoes illustrated a preference to those people with Type O blood over those of blood groups B, AB and A. They landed on the skin of Type O individuals nearly twice as often as Type A and much less for those with B and AB blood types.

People with Type O blood are more than universal donors. They’re also “tastier” to mosquitoes. In fact, according to a study, certain species of the insect landed on the skin of people with Type O blood almost twice as often as they did on the skin of those with Type A.

The average mosquito bite drains 0.01 to 0.001 milliliters of blood. Thus it would take somewhere between 200,000 and 2 million mosquito bites to kill you from blood loss. For the average adult male (a.k.a. me), that works out to between 68 and 680 bites for every square inch of skin.

Popular Science reports that a new study out of New Mexico State University found two fragrances — including Victoria’s Secret Bombshell perfume — work fairly well at repelling two common types of mosquitoes.

Here are 7 natural ways to prevent mosquito bites:

• Lemon Eucalyptus. The Center for Disease Control and Prevention (CDC) has classified lemon eucalyptus, an EPA registered repellent, as an active ingredient in mosquito repellent.
• Catnip Oil.
• Peppermint Oil.
• Lemongrass Oil.
• IR3535.
• Use a Fan.
• Eliminate Standing Water.

Citrus Fruit It’s a chemical compound found within citrus fruits that has proved to be highly effective in warding off mosquitoes and ticks.

It may sound strange but, banana peels are actually a great treatment for mosquito bites. This is due to the natural oils found within the banana’s skin. For this natural remedy, simply rub the banana peel, flesh side down, on your mosquito bite and relax as feel itch fade away into non-existence.