Note: The mail service will be listening for your connection on TCP port 25. But this information will not be important until you see some Perl code later in the chapter. The message that you prepare can only use alphanumeric characters. If you need to send binary information (like files), use the MIME protocol.
With my first set of twins we were able to tell at 16 weeks and with my second set at 14 weeks. It all just depends on their position. I was having ultrasounds every two weeks so there were alot of oppurtunities to look. It would not matter if they are different sizes. Helpful (8) Nice.
Multiple Pregnancy - Twins, Other Multiple Births. Print. Print. There are two types of twins: identical and fraternal (non-identical). Scientists use the terms monozygotic and dizygotic because these terms are biologically meaningful.