I am not a twin myself, but if I were I would definitely want to be an identical twin. There is just something amazing about having someone else in world with my exact DNA, down to last amino acid. Most people think of twins as being either identical or fraternal, but there are many different types of twins.

Identical Twin - Identical twins are born when a fertilized egg, or zygote, splits in two. Because egg is fertilized by one sperm cell, and it is sperm cell that determines sex of child, identical twins are always same sex.

The two children share 100% of their DNA, meaning that most complex DNA test could not tell difference between two. There are differences, however, in phenotype, or physical expression of DNA, that helps people distinguish between one identical twin and other. Though they share same genotype, they have different teeth and finger prints, for example.

Half- Identical Twin - Half- identical twins are born when egg splits prior to being fertilized, and two new cells are fertilized by two different sperm. The siblings share 25% of their DNA.

No auntie Sookie, not earth worms, computer virus worms that can get to you computer and slowly dig deep into your files and eat them away. Put that eggnog down and I'll tell you some more about these new worms.

This worm is a self-replicating (makes a copy of itself, aunt sookie!) program that reproduces itself over a network. It can be hidden in an email attachment from an unknown sender, a movie download from a suspicious website, or an application sent from someone you don't know. Once on your computer it then can replace a single file, like a winsock.dll or many files and send copies of itself along with email or newsgroup messages that you can post.

The following are ways to keep these type of worms out of your network:

a) Never, I said never (for emphasis) connect an unpatched, non updated computer or other Internet related device to Internet. How do you update and patch a computer without connecting to Internet? Get a cd from Microsoft with latest and greatest patches and updates, then connect device and then check for updates while connected to make sure you have protection.