yes
No. That is not possible.
No, female sperm do not have a longer lifespan compared to male sperm.
There are only two possible combinations of sperm that a male can produce. A single sperm will either be X bearing or Y bearing. If an X sperm splits one egg, the result will be female. If a Y sperm splits the egg, the result will be male.
sperm and egg from separate species are non-compatable.
human sperm cannot get a cow pregnant. The only species humans can get pregnant with their sperm is another human.
No, it is not risky for a girl to be transmitted with dog's sperm. Inter-species mating is not possible due to genetic incompatibility, so the sperm of a dog cannot fertilize a human egg. Additionally, even if it were possible, the differences in genetic makeup between species would likely result in an unsuccessful fertilization process. Therefore, there is no risk to a girl from being transmitted with dog's sperm.
As long as he produces the active male gamete cell (sperm) and physically make it possible for the sperm to reach the ovary and fertilize the ova in the female.
Sperm are visible, but only under magnification. By using a microscope that has a power of a few hundred times, it is possible to actually see them individually. Medical associates can count sperm in samples as well as spot "defective" sperm by the use of a modern microscope. Use the link below to check out some images and short video posts that show you how these little guys look.
Of course not. A female human can only get pregnant with a male human's sperm.
Sperm has no effect on how long you can run.
Sperm cells can live in a woman's uterus for up to 5 days, though the average is about 3-4 days. However, the lifespan of sperm can vary depending on factors such as cervical mucus quality and overall vaginal environment.
No, although that is one of the concepts that is so scary about advances in genetic engineering,