There are many causes for a sperm being defective. Some of the leading causes are:
In a normal human male, up to 10% of Sperm cells are defective.
Lysosomes are the organelles that become defective in these diseases.
Defective tails on sperm would significantly impair their motility, making it difficult for them to swim effectively towards the egg for fertilization. This reduced mobility can lead to lower fertility rates, as sperm may struggle to reach and penetrate the egg. Additionally, abnormal tail structure could affect the overall health and viability of the sperm, further diminishing reproductive success.
Impotence can be caused by many factors. Low sperm count, low testosterone, or defective sperm can be a cause. The best person to offer advice is one's physician.
You can become an sperm donor for contacting the sperm banks nearest to you; banks require that you are within 1 hour conmute from them.
No. No person on Earth can become pregnant without sperm.
When the ovum and sperm come together they become a fertlized egg also known as a zygote.
Sure. Bearings and seals can wear out.
Only if it's gay sperm. If you eat gay sperm you'll become a lesbian.
the other systems are not affected
If a man practice handjob regularly during his teenage, then his sperm count is reduced to such an extent that he may become sterile.
Technically one sperm cell can get you pregnant, but it is unlikely with one.