Here is a breakdown of one possible path to become a nurse midwife: 1  Graduate from high school. To prepare for an undergraduate program in nursing, itâs advisable to take classes such as biology, chemistry, algebra I/II, physics, statistics, and psychology (if available).
The gestation or pregnancy period of the Red Kangaroo lasts between 6 and 7 weeks. They will most often give birth to one offspring, or joey. The baby Kangaroo is extremely small when it is born, being roughly the size of a bean. After the joey is born, it will crawl up the mother's fur to get inside of the pouch.
Female rats that conceive during their postpartum estrus may therefore go through an extended gestation of about 32 days (+-1 day) rather than the normal 21-22 days (Mennella and Moltz 1988).