generations?
2006-12-20 14:29:31 · 3 answers · asked by Alex 2 in Science & Mathematics ➔ Biology
Do all genetic illnesses have their origin in a distant or recent mutation?
2006-12-20 15:27:13 · update #1
New research indicates that the genetic quality of sperm worsens as men get older, increasing a man's risk of being infertile, fathering unsuccessful pregnancies and passing along possibly other genetic diseases to his children.
A study led by scientists at Lawrence Livermore National Laboratory (LLNL) and the University of California, Berkeley, found a steady increase in sperm DNA fragmentation with increasing age of the study participants, along with increases in a gene mutation that causes achondroplasia, or dwarfism. The first changes were observed in men in their early reproductive years.
http://www.emaxhealth.com/52/6169.html
2006-12-20 14:50:27 · answer #1 · answered by coldflesh 3 · 2⤊ 0⤋
As men get older, their sperm detiorates, so the higher "quality" sperm is when they are younger...my dad was 37 when I was born and have had loads of physical problems....
2006-12-20 22:38:24 · answer #2 · answered by beetlejuice49423 5 · 0⤊ 1⤋
because as we get older sperm MUTATIONS occur, sperm without tails or sperm which cannot enter the egg at all because theyre weak.
Its really quite simple.
2006-12-20 22:33:39 · answer #3 · answered by . S 3 · 0⤊ 1⤋