Most primates carry their young. That would be too difficult if a mother had to carry two babies. Thus, twins are fairly rare among all primates.
The average time between twin births is around 10-15 minutes. However, it can vary widely depending on individual factors such as the position of the babies and the mother's health.
It is possible but very reare and only occurs in i in every 500,000 live births.
i dont know sry..... :(
It is relatively uncommon for twins to consist of one boy and one girl, occurring in about 1 out of every 50 twin births.
The twin birth rate in the United States is almost 16 twin sets (or 32 twins) per 1,000 live births.
The rate of twinning varies by country. There were 33.9 twins born for every 1,000 births in 2014 in the US. Yes, the rate of twin births has been increasing.
I looked it up and what I found was this: "32.2 per 1,000" I don't know what that means, but maybe you do.
Twin births for horses are rare, especially when both foals are born alive. In this case there should be two placentas.
Whether the dam was a twin herself may have a little influence on her odds of giving birth to twins. Normally twins occur in one out of 1000 births.
Although there is a genetic component to twin births, many multiple births are not genetic. If one generation has twins, the next generation may also have twins. The likelihood of twins reduces with succeeding generations that do not have twins. Multiple births does not have patters such as generation skipping, and is never guaranteed.
No, most twins are not born in November. While studies have shown that there can be seasonal variations in birth rates, the majority of twins are born throughout the year, with no specific month consistently showing a higher number of twin births. Factors such as maternal age and fertility treatments can influence twin births more than the month of delivery.
The typical time between births of twin sheep is ten to fifteen minutes. It has not been unheard of however, for the second to come five to six hours later.