Matter is made up of atoms and has mass. This is because for anything to be considered matter it must contain atoms and atoms must have mass.
This happens early in embryonic development in females, where one of the two X-Chromosomes is randomly (and permanently) inactivated, as you said, in cells other than egg cells.
This phenomonon is actually called X-Inactivation.
X-Inactivation make sure that females, just like males, have a single functional copy of the X Chromosome in each and every one of their cells in their body.
Glad I could help, byee now
it just as it is tempting to take natural selection to extreme so no not all
Answer:
E
F
A
B
C
D
matched according to your questions.
