The build up of lactic acid will need oxygen to break it up. Lactic acid is why muscles feel tired after excess exercise
The chromosomes become more compact and tightly coiled. They are ready to separate. :)
Hope this helps!
I believe its A because a bonds with t g bonds with c and c bonds with g, translated to rna it's UCG.
Spermatogenesis produces<span> four </span>gametes<span>, while </span>oogenesis produces one with two to three polar bodies left over. because oocytes contain not only genetic material but also mitochondria.