From earlier posts you may have noticed my inability to distinguish between chromasomes and chromatids...unfortunately I am still unable to do this.
So at the moment I think this to be true:
My cell normally has 46 chromosomes.
During the S phase of interphase, my DNA duplicates via semi-conservative replication. Do I now have 92 chromsomes (I'm kinda sure this is wrong) or do I have 92 chromatids and 46 chromosomes? Is it called a chromosome before replication when it is linear and wrapped around histone proteins . And is it also called a chromosome when it is X shaped and the X shaped chromosome is made of sister chromosomes which are a copy of the linear looking chromosome.
At anaphase the 42 "chromosomes" are split at the centromere and when they seperate the seperate parts are called chromatids. When do they go back to being chromsomes?
I really enjoy genetics but I can't seem to grasp these simple definitions! It seems like the word chromosme is used to describe many differnt structure of the DNA.
Essentially want to know how many chromsomes are in each phase of mitosis in addition to what exactly a chromosome is?