AP BIOLOGY

Detailed explanation-1: -gestation, in mammals, the time between conception and birth, during which the embryo or fetus is developing in the uterus. This definition raises occasional difficulties because in some species (e.g., monkeys and man) the exact time of conception may not be known.

Detailed explanation-2: -Gestation is the period of time between conception and birth. During this time, the baby grows and develops inside the mother’s womb. Gestational age is the common term used during pregnancy to describe how far along the pregnancy is.

Detailed explanation-3: -Gestation is the period of time between conception and birth when a baby grows and develops inside the mother’s womb. Because it’s impossible to know exactly when conception occurs, gestational age is measured from the first day of the mother’s last menstrual cycle to the current date. It is measured in weeks.

Detailed explanation-4: -Read the full fact sheet. The unborn baby spends around 38 weeks in the uterus, but the average length of pregnancy, or gestation, is counted at 40 weeks. Pregnancy is counted from the first day of the woman’s last period, not the date of conception which generally occurs 2 weeks later.

Detailed explanation-5: -The gestation period is how long a woman is pregnant. Most babies are born between 38 and 42 weeks of gestation. Babies born before 37 weeks are considered premature. Babies born after 42 weeks are called postmature.