CMxFuZioNz
CMxFuZioNz t1_ixmr0w7 wrote
Reply to comment by _googlefanatic_ in If freezing tissue generally damages the cells, how are we able to freeze human eggs and embryos for birthing later? by badblackguy
No. If you freeze 50 eggs and 25 of the eggs are damaged by freezing/thawing that doesn't affect the other 25 eggs which weren't damaged.
If you freeze a heart and half of it is damaged, the whole thing will no longer work when you put it in someone.
CMxFuZioNz t1_jbiwuuq wrote
Reply to comment by shagieIsMe in Is there a fertile creature with an odd number of chromosomes? by TheBloxyBloxGuy
"leading to our extinction" is a bit dramatic.
The y chromosome is decreasing because there's either pressure to do so, or no pressure to stop it.
If the y chromosome disappearing meant that our species started to decline, then there would be pressure to either find a new sex determination method as has happened in the rodents or simply continue on with the y chromosome. There's no existential threat.