Ok, so lets say i have animal cell A. The DNA in the nucleus has compacted to form 4 different chromosomes, each one shaped like an 'X' [with 2 chromatids and one centromere]. When the cell splits, the kinetochore fibers pull apart each of the 4 chromosomes, yielding 2 separate cells each with 4 HALF-chromosomes or 'chromatids'. Doesnt this mean that every time a cell does binary fission, it loses HALF its genetic information?
I just fail to see how this equation is even.
One cell has 4 chromosomes shaped like X's. It splits and makes 2 separate cells with 4 half chromosomes each [they are just shaped like lines]
PLEASE explain how cells formed by binary fission don't have HALF the genetic information as the original cell. This is really bothering me, haha.
2007-12-10
14:06:49
·
4 answers
·
asked by
Anonymous
in
Science & Mathematics
➔ Biology