This depends on the reason for the infertility. Usually problems with sperm are genetic, so cannot be seen by looking at sperm. However some sperm will have motility problems that reduce fertility, and this can clearly be seen down a microscope - some sperm will be seen swimming round in circles.
Sperm of a fertile male.
NO
You can't.
It doesn't depend on how much of sperm is produced for a man to be fertile but it depends on the quality of the sperm. Many lifestyle factors affect the quality of sperm, eg. Smoking, excessive alcohol intake , temperature at which the testicles are kept at, etc.
the sperm finds a fertile egg and makes a baby
they gave females fertile sperm.
The color of sperm does not affect fertility. Sperm color can vary from clear to white, and factors such as diet, hydration, and overall health can influence its appearance. Fertility is determined by sperm count, motility, and morphology.
he has no sperm.......Sperm only make up about 5% of the total volume of semen. So even if the man has had a vasectomy or is sterile for some other reason, his ejaculate will look pretty much the same as amn who is fertile.
Yes, however sperm count decreases with age.
The sperm must have an X chromosome as opposed to a Y chromosome.
Depensd on what's wrong. There's IVF that can help things along, or you might need to look for a sperm or an egg donor.
Not necessarily. Organisms that look different can belong to the same species if they can interbreed and produce fertile offspring. Organisms that look similar can also belong to different species if they are reproductively isolated and cannot interbreed successfully.