about 1-4%.
Animal twins
Twins are common in many animal species, such as cats, sheep, ferrets and deer. The incidence of twinning among cattle is about 1-4%, and research is under way to improve the odds of twinning, which can be more profitable for the breeder if complications can be sidestepped or managed. The nine-banded armadillo (Dasypus novemcinctus) has identical twins (usually four babies) as its regular reproduction and not as exceptional cases.
Twin calves of the Hereford breed
I hope this can help you.
Having twins is based on probability. There is not a 100% chance you will have twins.
Women who are themselves fraternal twins have a 10% chance of producing twins, identical twin women have only a 0.6% probability of having a twin birth.
Identical twins happen by chance only; 4 per 1000 births or 0.004 probability. Fraternal twin probability is increased only if it is on the mother's side; so this does you affect your circumstance (from what you have stated). The chance of fraternal twins is 1 in 60 or 0.017. So, your probability of identical twins is 0.004 and fraternal twins is 0.017 (BTW, I have triplets).
Yes, because after 35 your probability for having multiple births goes up.
The probability of having identical twins, also known as monozygotic twins, is relatively low, occurring in about 3 to 4 per 1,000 births. This type of twinning happens when a single fertilized egg splits into two embryos. Factors such as genetics, maternal age, and certain fertility treatments can influence the likelihood, but generally, identical twins occur randomly and are not influenced by heredity. In contrast, fraternal twins are more common and can be influenced by genetic factors.
The fact that twins run in families is actually a myth. The odds of twins having twins is the same as a non-twin having twins. That is about 1 in 33.
1- P(identical) - P(fraternal) =1-0.004-0.023 =0.973 The probability of being a identical or fraternal twin plus the probability of not being a twin has to add to 1. so 1- probability of being twins=probability of not being a twin ;-)
Ans : Probability that there will be at least one case of twins = 1-(79/80)^20
The probability is the same as if you had no history of twins in your family. There is no genetic component with identical twins, it is just something that happens. Fraternal twins occur if a mother "drops" two eggs in one month. Your father being a fraternal twin does not make you "drop" more than one egg in a month and so does not increase your chances of having twins. Your maternal grandfather being a fraternal twin did not effect your mother's ability to drop more than one egg and so did not effect your ability to "drop" more than one egg and so does not increase your ability to have twins.
No, Britney Spears is not having twins.
if twins run in the family u are more likely to have twins but most likely fraternal because identical twins are just a very unique coincidence
The same. You just get twins.