45
The average gestation for a mare can range between 320-370, or about 46 weeks to about 53 weeks.
6 Weeks Gestation actually counts from fertilization. However many weeks pregnant you are is actually counted from the first day of your last period. So, when you are 20 weeks pregnant you are actually only 18 weeks gestation. You may of had your days wrong and you really is 6 weeks or they may be measuring your baby head incorrectly
39 weeks
Medication abortion can be performed safely up to 9 weeks gestation (i.e. 9 weeks after the first day of the last period).
45 Weeks for howrse. :) -David A. Idol luver
The gestation period for a human typically lasts about 40 weeks, counting from the first day of the last menstrual period. This is roughly equivalent to nine months. However, a full-term pregnancy can range from 37 to 42 weeks. Babies born before 37 weeks are considered preterm, while those born after 42 weeks are considered post-term.
The gestation period for a cat is usually around 9 weeks =)
Twins typically share a gestation period of about 37 weeks, which is slightly shorter than the average 40 weeks for a singleton pregnancy. While most twins are born prematurely, a gestation period of 34 to 36 weeks is common for many twin pregnancies. Factors such as maternal health and the type of twins (identical or fraternal) can also influence the length of gestation.
15 mm is about 5 weeks and 3 days, very early gestation!
44.3 to 53 weeks with an average of 48.6 weeks.
A newborn baby is 40 weeks old. The gestation period in humans normally ranges between 37 and 42 weeks.
it last 40 weeks
Piranha gestation lasts from about four to six weeks depending on the species. A female of many of the species is able to lay over 5,000 eggs at a time.