Yes. It is possible for twins to have different fathers in a phenomenon called heteropaternal superfecundation, which occurs when two of a woman's eggs are fertilized by sperm from two different men.
Yes, but not monozygotic twins. There are cases where a woman was impregnated by two (or more?) men very close in time to each other, and two ova were fertilized by different men. In that case black and white twins are quite possible.
No, a woman has never impregnated herself. However, many women have been impregnated through artificial insemination, which still requires the use of a male.
If there is a chance that you could have been impregnated in the past 2 months, you could be pregnant.
saturated, permeated
No. Only one sperm cell can fertilize an egg. One of them is the father. Not both
Pertinax
yeah i impregnated him
eto
Tissue that forms cartilage gradually becomes impregnated with calcium salts.
Yes! but once impregnated the female is fertilized rest of her life. This basically means that cockroaches do not need to keep mating to get pregnant.
An incubus is a ficticious creature.
Zeus met Leto when he pursued her and impregnated her. Leto bore Zeus two children, Apollo and Artemis.