In viviparous, or "live bearing' species such as humans, this is the period of time in an offspring's development between fertilization and birth Source : PhRMA Genomics
After the virus is created, the virus writer copies it and makes sure that it spreads Usually, this is done by infecting a popular program and placing it on a BBS or distributing copies through offices, schools, and other large organizations (see Replication)
the state of being pregnant; the period from conception to birth when a woman carries a developing fetus in her uterus
Gestation is the process in which babies grow inside their mother's body before they are born. the seventeenth week of gestation The gestation period can be anything between 95 and 150 days